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The Middle Ages in Romania began shortly after the withdrawal of the Roman legions from the former Roman province of Dacia in the late 3rd century and with the start of the Early Middle Ages and the Migration Period that followed afterwards respectively. It subsequently came to an end with the reign of Domn Michael the Brave (1593–1601) who managed, for a short time between 1599 and 1600, to rule Wallachia, Moldavia, and Transylvania together, the three principalities whose territories were to be united some three centuries later to form modern and contemporary Romania.
Over most of this period, Banat, Crișana, Maramureș, and Transylvania – now regions in Romania to the west of the Carpathian Mountains – were part of the Kingdom of Hungary. They were divided into several types of administrative units, such as "counties" and "seats". The heads of the Transylvanian counties or "counts" were subordinated to a special royal official called voivode, but the province was seldom treated as a single unit, since the Székely and Saxon seats were administered separately. In the kingdom, Romanian peasants, being Orthodox, were exempt from the tithe, an ecclesiastical tax payable by all Roman Catholic commoners. However, Romanian noblemen slowly lost the ability to participate in political life, as the 14th-century monarchs pursued a zealous pro-Catholic policy. Their position became even worse after 1437 when the so-called "Union of Three Nations", an alliance of the Hungarian noblemen, the Székelys, and the Saxons, was formed in order to crush the Bobâlna peasant uprising.
Wallachia, the first independent medieval state between the Carpathians and the lower Danube was created when Basarab I (' 1310–1352) terminated the suzerainty of the King of Hungary with his victory in the battle of Posada in 1330. The independence of Moldavia, to the east of the Carpathians, was achieved by Bogdan I (1359–1365), a nobleman from the Voivodeship of Maramureș, who led a revolt against the former ruler who was appointed by the Hungarian monarch. The independence of the two principalities, however, was rarely secure, and vassalage to multiple states became an important aspect of their diplomacy. Although Wallachia paid tribute to the Ottoman Empire from 1417, and Moldavia from 1456, their two medieval monarchs, Mircea the Old of Wallachia (1386–1418) and Stephen the Great of Moldavia (1457–1504) conducted successful military operations against the Ottoman Turks. The two principalities' trade with other parts of Europe began to decrease after the last decades of the 15th century. Before this the sale of hides, grain, honey, and wax to the Holy Roman Empire, Venice, and Poland, and the import of silk, weapons and other manufactured goods from these areas had been widespread, but by the end of the 16th century the Ottoman Empire became the main market for Romanian products.
Transylvania, together with the neighboring counties, gained the status of an autonomous state under Ottoman suzerainty after the central territories of the Kingdom of Hungary had been annexed by the Ottomans in 1541. The fall of the kingdom also deprived Wallachia and Moldavia of their main ally in the struggle against the Ottoman Empire. In 1594, Michael the Brave of Wallachia joined the anti-Ottoman alliance initiated by Pope Clement VIII. After a series of victory over the Ottomans, he turned against Transylvania and Moldavia where pro-Polish and pro-Ottoman princes were reigning. He invaded and occupied Transylvania in 1599, and Moldavia in 1600. Although the personal union of the three countries collapsed four months later, it served as an ideal for later generations working for the unification of the lands that now form Romania.
Early Middle Ages (late 8th century–early 13th century)
At the end of the 8th century, the establishment of the Khazar Khaganate north of the Caucasus Mountains created an obstacle in the path of nomadic people moving westward. In the following period, the local population of the Carpathian–Danubian area profited from the peaceful political climate and a unitary material culture, called "Dridu", that developed in the region. Finds from the Dridu settlements, such as coulters and sickles, confirm the role of agriculture in their economy.
thumb|right|200px|alt=Map of rivers in Romania|The [[Carpathian Mountains and the main rivers in modern Romania]]
In the 9th century centrifugal movements commenced in the Khazar Kaghanate. One of the subject peoples, the Hungarians, left the Khanate and settled in the region between the rivers Don and Dniester. and ruled by Gelou, "a certain Vlach" (quidam blacus),
In 953, the gyula, the second leader in rank of the Hungarian tribal federation, converted to Christianity in Constantinople. Around that time, according to the Byzantine Emperor Constantine VII, the Hungarians controlled the region on the border of modern Romania and Hungary along the rivers Timiș, Mureș, Criș, Tisa and Toutis. In 1003, as the Annals of Hildesheim narrates, Stephen I, the first crowned monarch of Hungary (c. 1000–1038) "led an army against his maternal uncle, Gyula, and occupied Gyula's country.
Stephen I granted privileges to the Roman Catholic Church, for example by ordering the general imposition of the tithe upon the population. Burials in most local pre-Christian cemeteries, for example at Hunedoara, only ceased around 1100. Stephen I also divided his kingdom, including the territories of modern Romania he had occupied, into counties, that is administrative units around royal fortresses, each administered by a royal official called count. In time the voivode, a higher royal official first attested in 1176, became the principal of all the counts in Transylvania. In contrast with Transylvania, the counts in modern Banat and Crișana remained in direct contact with the king who appointed and replaced them at will.
From the end of the 9th century the Pechenegs controlled the territories to the east and south of the Carpathians. According to the Eymund's saga, they fought together with the Blökkumen ("Romanians") in the Kievan Rus' in the 1010s. The Pechenegs were swept aside from their territories by the Cumans between 1064 and 1078. A late variant of the oldest Turkish chronicle, the Oghuz-name relates that the Cumans defeated many nations, including the Ulâq ("Romanians"). Some of the Pechenegs fled into the Kingdom of Hungary where they were employed to guard the border districts, for instance in Transylvania.
The 11th-century settlements in Transylvania are characterized by small huts with ceramic assemblages marked by clay cauldrons. The increasing number of coin finds suggests that the province experienced economic growth in the late 11th century. The first document pertaining to the province is a royal charter of 1075 referring to taxes on salt levied at Turda. The earliest precious metal mine in medieval Transylvania, the silver mine at Rodna was first mentioned in 1235.
In the 12th and 13th centuries hospites ("guest settlers") arrived in Transylvania from Germany and from the French-speaking regions on the river Rhine who in time became collectively known as "Saxons". In 1224 Andrew II of Hungary (1205–1235) granted special liberties to the Saxons who had settled in southern Transylvania. For instance, they were authorized to choose their local leaders; only the head of the entire community, the count of Sibiu, was appointed by the king. They were also granted the right to use "the forest of the Romanians and the Pechenegs". The first references to viniculture in Transylvania are connected to the vineyards of the hospites of Cricău, Ighiu, and Romos.
thumb|left|200px|alt=Ruins of the Cărța Monastery|Ruins of the [[Romanesque architecture|Romanesque Cârța Monastery (), Cârța, Sibiu County, southern Transylvania.]]
As a result of the Saxon immigration, the Székelys – Hungarian-speaking free warriors cultivating communal lands – were transferred to the southeast of the province. From the 13th century they were governed independently from the voivode by a royal official, the count of the Székelys. Besides the Saxons, the Cistercians became the agents of expansion in Transylvania. When their abbey at Cârța was established in the early 13th century, Andrew II ordered that the strip of land running up to the mountains between the rivers Olt, Cârțișoara and Arpaș be transferred from the Romanians to the new monastery.
Following the defeat of the Cumans by the Mongols on the river Kalka in 1223, some chieftains of the western Cuman tribes accepted the authority of the king of Hungary. Their conversion led to the creation of the Roman Catholic Diocese of Cumania to the east of the Carpathians. However, the Orthodox Romanian population of the territory received the sacraments from "some pseudo-bishops of the Greek rite", according to a papal bull of 1234. In 1233 Oltenia was organized into a military frontier zone of the Kingdom of Hungary, called the Banate of Severin.
The expansion across the Carpathians was stopped by the invasion of the Mongols that lasted from March 31, 1241 to April, 1242. It was a major watershed in the medieval history of the region: although the number of casualties is disputed, even the most prudent estimates do not go below 15 percent of the total population.
High Middle Ages (1242–1396)
Outer-Carpathian regions
After the withdrawal from the Kingdom of Hungary, the Mongol forces halted at Sarai (now Russia) on the Volga River where their leader, Batu Khan set up his own capital. Henceforth, the steppes between the rivers Dnieper and Danube were under the influence of the Mongols of the Volga, known as the Golden Horde. From the 1260s, a relative of Batu, Nogai Khan settled at Isaccea on the Lower Danube and became the absolute master of the neighboring regions. He made himself independent of the Golden Horde around 1280, but was killed in a battle in 1299.
By the middle of the 14th century, the westernmost Mongol territories had become subject to frequent Polish and Hungarian military offensives. Grand Prince Olgierd of Lithuania penetrated farther into the territories controlled by the Golden Horde than any European army had hitherto done. He won a major victory over the united Mongol troops on the Dnieper near the Black Sea in 1363.
Intra-Carpathian regions
thumb|right|190px|alt=The tower of a church and snowy mountains in the distance |[[Densuș Church|Romanian Orthodox church at Densuș]]
thumb|right|190px|alt=A map depicting the provinces of a dozen oligarchs|The domains of [[Ladislaus Kán and other oligarchs in the Kingdom of Hungary in the early 14th century]]
thumb|right|190px|alt=Fortress at Deva|[[Ladislaus Kán's fortress at Deva]]
thumb|right|190px|alt=Map of Transylvanian Saxon seats|[[Transylvanian Saxons|Saxon seats in Transylvania]]
Having been raided twice by the Mongols within a single year, Transylvania felt the consequences of the invasion of 1241–1242 for more than two decades. The administrative centers of the province, such as Alba Iulia and Cetatea de Baltă, had been destroyed. Due to the severe depopulation, a process of organized colonization commenced that lasted for several decades. For example, a new wave of colonization resulted in the establishment of the Saxon seats of Sighișoara and Mediaș; and the lord of Ilia received, in 1292, royal permission to settle Romanians in the lands he owned.
Since only castles built of stone and walled towns had been able to resist Mongol attacks, following the withdrawal of the Mongols the kings encouraged both the landowners and the townspeople to build stone fortifications. New stone fortresses were built, for example, at Codlea, Rimetea, and Unguraș. The process of urbanization was characterized by the predominance of the Saxon towns: out of the eight towns in Transylvania, only Alba Iulia and Dej were situated in the counties. A charter referring to inns, bakeries, and bathhouses in Rodna proves the city-like way of life of its inhabitants. Salt was still the most important item of trade in this period, but trading with oxen, maidservants, and wine is also documented in royal charters.
In 1257, Béla IV of Hungary (1235–1270) appointed his eldest son, the future Stephen V (1270–1272) to govern the kingdom's territories to the east of the Danube. Here the younger king ceded a significant part of his royal domains to noblemen. The first years of the reign of Ladislaus IV of Hungary (1272–1290), were characterized by civil wars throughout the entire kingdom. In Transylvania, the Saxons engaged in a local conflict with the bishop, took Alba Iulia and set fire to the cathedral. The series of wars continued in 1285 with a second Mongol invasion. During its initial stage, the Székelys, the Romanians and the Saxons successfully blocked the Mongols' access and later organized a series of ambushes provoking panic among the retreating invaders.
By that time, the Romanians' military role had expanded from their original task of defending the kingdom's frontiers. They participated in several military campaigns, for example against Bohemia in 1260 and against Austria in 1291. Their economic role became also recognized, since their pastoral activities connected to cloth production of the Saxon settlements. To the monarchs, they paid a special tax in sheep, called the "fiftieth". Andrew III of Hungary (1290–1301) even ordered, in 1293, that all the Romanians who had been settled without royal permission on noble domains be returned to the royal estate of Armeni.
In the last decades of the 13th century, congregatio generalis ("general assembly") convoked by the monarchs or their representatives became an important organ of court system. For instance, the general assembly convoked in 1279 by Ladislaus IV for seven counties – among them Bihor, Crasna, Sătmar, and Zărand in the territory what is now Romania – ended with sentencing a despotic person to death. The first charter referring to a general assembly of the Transylvanian counties was recorded in 1288. A general assembly of the Transylvanian nobles, Saxons, Székelys and Romanians was convoked personally by the monarch in 1291.
When Andrew III died in 1301, the entire kingdom was in the hands of a dozen powerful noblemen. Among them, Roland Borsa ruled Crișana, Theodore Vejtehi gained the upper hand in the Banat, and Ladislaus Kán governed Transylvania. The latter's authority was also recognized by the Saxons and the Székelys. He even assumed royal prerogatives, such as taking over lands lacking rightful owners. After 1310, he acknowledged Charles I of Hungary (1301–1342) as his sovereign, but in fact continued to rule independently. The king who transferred his residence to Timișoara in 1315 could only strengthen his authority after a long series of confrontations. For instance, Ciceu, the last stronghold of Ladislaus Kán's sons surrendered in 1321. In appreciation of the Transylvanian noblemen's services in the crushing of the revolt, Charles I exempted them from the taxes they had so far paid to the voivodes.
In this period, one of the major incentives for the growth of Transylvanian towns was the trade with Wallachia and Moldavia. For instance, Brașov was granted a staple right in 1369 with respect to the trade in cloth from Poland or Germany. Thereafter, foreign merchants had to sell their most sought-after merchandise, broadcloth to the tradesmen of Brașov who resold it in Wallachia in exchange for animals, cotton, wax and honey. This distinction, however, did not mean real nobility and grant them exemption from royal taxes, even for the noble knezes. Their status corresponded to that of the Hungarian "conditional nobles" whose nobility depended on the specified military services they were to render.
According to a royal decree of 1428, Louis I had also ordered that only Catholics be granted land in the Sebeș district of Timiș county. As a result of official pressure, many Romanian noblemen converted to Catholicism. For example, the members of the powerful Drágffy family turned Catholic in the 15th century. The Ottomans raided Transylvania for the first time in 1394. Sigismund I of Hungary (1387–1437) organized a crusade against them, but the battle of Nicopolis (now Nikopol, Bulgaria) ended in disaster for the Christian forces in 1396.
Establishment of Wallachia
According to a charter issued by Béla IV of Hungary for the Knights Hospitallers in 1247, at that time at least four polities existed in the area to the south of the Carpathians. Two of them, the cnezats of John and Farcaș were granted to the knights, but the lands ruled by Litovoi and Seneslau were left "to the Olati" ("Romanians") "just as they have owned it". In the 1270s, Litovoi extended his territory and stopped paying tribute to the king, but his army was defeated by the royal forces, and he was killed in the battle.
right|thumb|200px|alt=Battle of Posada|The [[Battle of Posada in the Vienna Illustrated Chronicle]]
Romanian historical tradition associates the foundation of Wallachia with the "dismounting of Radu Negru" who crossed the Carpathians from Transylvania accompanied by "Romanians, papists, Saxons, and all kind of men" around 1290. The first sovereign of Wallachia recorded in contemporary sources was Basarab I who obtained international recognition for the independence of the principality by his victory over Charles I of Hungary in the battle of Posada on November 12, 1330. The princes of Wallachia were chosen from among his descendants – either legitimate, or not – by an assembly of the boyars until the 16th century.
The boyars, members of the landed nobility, formed the most important social group in the principality. The vast majority of the population was formed by peasants who were called several names, such as vecini ("neighbors") or rumâni ("Romanians"), in medieval documents.
The Ottomans entered for the first time into Wallachia in 1395. Although the invading troops were defeated somewhere in a rovină ("ragged marshland") in Oltenia, the chaos created by the threat of attacks allowed a group of boyars to put Vlad I the Usurper (1395–1397) on the throne. He was restored to the throne and participated in the disastrous crusade of Nicopolis organized by Sigismund I. In 1345 Andrew Lackfi, the count of the Székelys led an army over the Carpathians and occupied this region where a border province was organized by Louis I of Hungary.
thumb|left|200px|alt=Neamț Citadel|[[Neamț Citadel|Fortress at Neamț]]
Romanian historical tradition links the foundation of Moldavia to the "dismounting of Dragoș", a Romanian voivode of the Voivodeship of Maramureș. Although Dragoș was succeeded by his son, Sas, his line did not last long. His descendants were soon expelled by Bogdan, a former voivode of Maramureș who fled to Moldavia and joined with local boyars in a revolt.
In Moldavia, agriculture and animal raising remained the principal economic activities. Similarly to Wallachia, wooden plow remained the main agricultural tool throughout the Middle Ages. The constant clearing of land shows that finding new land was still preferred to crop rotation. The establishment of the principality enhanced the security of travel, thus Moldavia could also profit from the transit trade between Poland and the Black Sea ports. Thus either a legitimate or an illegitimate member of the Mușatin family could be proclaimed prince by an assembly of the boyars. Therefore, the princes of Moldavia could counterbalance the influence of Poland and Hungary by playing one off against the other. By the end of the 13th century, flourishing communities of Genoese merchants had settled in the towns of Vicina, Chilia and Licostomo. Led by Anton Budai Nagy, the rebellious peasants, who called themselves "the commune of the rightful Hungarian and Romanian inhabitants of this part of Transylvania", established a fortified camp on the Bobâlna hill early in 1437. They fought two important battles against the noblemen; the first one, at Bobâlna, was won by the peasants, and the second one, near the Apatiu River, had no clear winner. The leaders of the noblemen, the Saxons and the Székelys, however, set up a "brotherly union" in order to join forces and crushed the peasants' resistance by the end of January 1438. Christendom found its champion in John Hunyadi who gained a series of victories over the Ottomans after 1441. For instance, in 1442 he routed an Ottoman army that had been devastating Transylvania. Through his last victory over Mehmed II at the siege of Belgrade (in modern Serbia) in 1456, he saved the kingdom from Ottoman occupation for several decades. During the reign of his son, Matthias I of Hungary (1458–1490), the Ottomans launched only one serious attack against Transylvania in 1479 when they were defeated at Câmpul Pâinii.
Matthias I used his officials to assert royal prerogatives that had already fallen into disuse. The noblemen found it particularly irksome that the lucrum camarae, a tax from which they had been exempted was replaced with a new tax. In Transylvania, the "Three Nations" entered into a formal alliance against the king in 1467, but he quickly intervened and took the disorganized rebels by surprise.
By that time, the land once held in common by the Székely community had gradually become divided into smaller and smaller units; thus a vast number of the free warrior-peasants had to enter the service of their more prosperous fellow Székelys. This social stratification was formally recognized by a royal decree in 1473. Thereafter those who performed mounted military service were differentiated from those who fought as foot-soldiers; those who were unable to finance themselves even as foot-soldiers were legally reduced to servitude.
The prominence of the German element in the towns sometimes led to conflicts along ethnic lines. Thus the struggle for leadership in Cluj (now Cluj-Napoca) between Hungarians and Saxons only came to an end in 1458 by establishing a rule that municipal offices must be shared equally between the two groups.
The downfall of the Kingdom of Hungary was marked by the battle of Mohács (Hungary) where the royal army was annihilated by the Ottomans on August 29, 1526. Thereafter the noblemen's political factions engaged in conflict and elected two kings. One of them, John I Szapolyai (1526–1540) was supported by the lesser nobility, while Ferdinand I of Habsburg (1526–1564) was recognized mainly in the kingdom's western counties, but the Transylvanian Saxons also supported him. Seeking the assistance of the Ottomans, John I had to pay homage to the sultan at Mohács in 1529.
Wallachia
thumb|right|250px|alt=Map of Wallachia around 1404|Wallachia (c. 1404)
After the battle of Nicopolis, the Ottomans occupied Bulgaria and could attack Wallachia more easily. Mircea I the Old, however, could reoccupy Dobruja in 1402 by taking advantage of the Ottomans' difficulties after their defeat by Timur Lenk in the battle of Ankara. He even intervened in the Ottoman civil war and supported the struggle of Musa and Mustafa against their brother, Mehmed I. After the two pretenders had been defeated, the Ottomans annexed again Dobruja and occupied Giurgiu, and Mircea I was forced to pay an annual tribute to the sultan. Under Mircea I iron mines were opened at Baia de Fier and copper mining began at Baia de Aramă. In addition, sulfur and amber were extracted in the region of Buzău.
After Mircea I's death, princes succeeded one another on the throne with devastating frequency.
Alexander I Aldea (1431–1436) was the first Romanian ruler to be forced to render military service to the Ottomans. Two decades later, Vlad III the Impaler (1448, 1456–1462, 1476), notorious as the model for the Dracula legend, turned against the Ottoman Empire. He carried out a series of attacks across the Danube in the winter of 1461–1462. The response was a massive invasion led by Mehmed II who drove Vlad III from the throne and replaced him with his brother, Radu III the Fair (1462–1475). Due to the frequent military operations, the Wallachian Plain was heavily depopulated after the end of the 14th century. On the other hand, Wallachia received a steady flow of immigrants, mostly from the Balkans.
After 1462 Wallachia preserved its autonomy mainly through the intervention of Stephen the Great of Moldavia. At the end of the century, however, Radu IV the Great (1495–1508) became an obedient subject of the sultan and visited Istanbul annually to personally offer the tribute. Even so, he could only stay in power by collaborating with the powerful Craiovești family, strongly connected to the Ottomans by trading. In 1512 a member of this family, Neagoe (1512–1521) rose to throne, but he adopted the dynastic name of Basarab in order to legitimize his rule. He wrote the first original work of Romanian literature, titled Teachings, to his son, Teodosius on moral, political, and military questions. Finally, he was, in 1525, forced to accept Ottoman suzerainty and the rise of the tribute.
Moldavia
The Orthodox Metropolitan See of Moldavia was recognized by the Ecumenical Patriarch during the reign of Alexander I the Good (1400–1432). He reinforced Moldavia's traditional pro-Polish orientation and declared himself a vassal of Władysław II of Poland in 1406. Thenceforth, the Moldavian armies fought together with the Poles against the Teutonic Knights. The first Ottoman attack on Moldavia in 1420 was also repulsed by him. Alexander I's death was followed by a long period of political instability, characterized by frequent fights for the throne.
Although cottage industries, both in boyar and peasant households, were still the main source of clothing, food and construction, specialized production, such as weaving and pottery, started to develop by the middle of the 15th century. The first oil wells went into production in 1440, but their oil was also only for household use. In Moldavia, Gypsy slaves were first mentioned in 1428 when Alexander I awarded 31 Gypsy families to the Bistrița Monastery. In time Gypsies became specialized in several crafts: for example, throughout the Middle Ages the working of iron was an occupation reserved almost exclusively for them.
Peter III Aaron (1451–1457) was the first prince who agreed to pay tribute to the Ottomans in 1456.
He was ousted by his nephew, Stephen, with the support of Vlad the Impaler of Wallachia. Stephen III the Great was to be the most important medieval Romanian monarch who managed to uphold Moldavia's autonomy against Hungary, Poland and the Ottoman Empire.
thumb|left|200px|alt=Europe around 1470|Europe around 1470
In the early years of his reign, he remained allied with Poland and the Ottoman Empire, He soon received the ultimatum of Mehmed II who demanded the surrender of Chilia, a fortress recently captured from Wallachia. Stephen the Great suffered the greatest setback of his reign in 1484 when the Ottomans captured Chilia and Cetatea Alba (now Bilhorod-Dnistrovskyi, Ukraine) on the Black Sea. The Diets of 1554 and 1555 decided that a Catholic or Protestant peasant could not be accused of a crime except there were seven Catholic or Protestant witnesses against him, while an Orthodox peasant could be accused if there were three Catholic or Protestant or seven Orthodox witnesses.
thumb|left|200px|alt=Church in Sibiu|[[Sibiu Lutheran Cathedral|Evangelical Church in Sibiu]]
From the Székelys, continuing warfare demanded increased military service, and the royal administration imposed special taxes on them. Although the leaders of the Székely community were exempted from taxation in 1554, but all the foot soldiers continued to be taxed, resulting in a double burden of military and monetary obligations for them. In 1562 many Székelys took up arms against John II Sigismund, but they were defeated. The Saxon towns continued to develop even in the years of upheaval. Their population, however, increased slowly, mainly as a consequence of the Saxons' traditional desire for segregation: even Hungarian craftsmen and merchants were prohibited from settling in their towns.
In the Treaty of Speyer of August 16, 1570, John II Sigismund acknowledged his rival, Maximilian I (1564–1576) as the lawful king of Hungary and adopted the title of "prince of Transylvania and parts of the Kingdom of Hungary". The treaty also marked out the borders of the new principality, which included not only the historical province of Transylvania, but also some neighboring counties, such as Bihor and Maramureș, thenceforward collectively known as Partium. The death of John II Sigismund in 1571 threatened to throw the country again into the hands of the Habsburgs whose officers supported the Unitarian Gáspár Bekes. Now the sultan appointed Stephen Báthory, a Catholic politician, voivode.
The decisive battle between the two candidates was won by Stephen Báthory at Sânpaul on July 8, 1575. In the same year, he was elected king of Poland, thus a personal union was formed between the two countries that lasted until his death in 1586. He left the administration of the principality first to his brother, Christopher Báthory (1575–1581), and then to his brother's minor son, Sigismund Báthory (1581–1602), bestowing on them the title of voivode, while he himself took the title of prince.
In February, 1594 Sigismund Báthory announced that his country would join the anti-Ottoman alliance formed by the Holy Roman Emperor, Rudolf II, Philip II of Spain and many smaller Italian and German states. Although the Estates twice refused to endorse the declaration of war, Transylvania joined the alliance on January 28, 1595 after the leaders of the opposition had been executed on the order of the monarch. In return Rudolph II recognized Sigismund's title of prince.
Wallachia
The short and unworthy reigns of Radu V's successors only increased the crisis of Wallachia. Starting with Mircea the Shepherd (1545–1559), the first prince placed on the throne by the sultan, the crown became negotiable, according to the largest tribute offered. Even Michael the Brave who in time would turn against the Ottomans ascended the throne with the support of some people who had influence with the Sublime Porte, among them Sir Edward Barton, the English ambassador to Istanbul.
He soon embarked upon a program to strengthen the central authority by replacing the members of the sfatul domnesc, an advisory body consisting of boyars, with dregători, that is officials personally loyal to him. Michael the Brave also adopted an anti-Ottoman policy, and upon his initiative Sigismund Báthory of Transylvania and Aaron the Tyrant of Moldavia (1591–1595) signed a treaty to form an anti-Ottoman alliance. The rebellion started by the massacre of all the Ottomans in Wallachia on November 13, 1594. As a result, Ottoman and Wallachian troops invaded Moldavia, but they were defeated by John III in a surprise attack near Jiliște. Next Aaron the Tyrant joined the anti-Ottoman coalition of Transylvania and Wallachia, and started a rebellion on November 13, 1594, simultaneously with Michael the Brave of Wallachia.
The 16th century was characterized by the flourishing of ecclesiastical mural painting whose technique have remained a secret until today. For example, the interior and exterior frescoes of the Voroneț Monastery represent this "Moldavian style".
Age of Michael the Brave (1595–1601)
thumb|right|200px|alt=Michael the Brave|[[Michael the Brave]]
thumb|right|200px|alt=Map of Moldavia, Transylvania and Wallachia|Moldavia, Transylvania and Wallachia in 1600
Following their coordinated uprising, Michael the Brave attacked Ottoman strongholds along the Danube and recovered Giurgiu and Brăila, while Aaron the Tyrant seized Ismail (now in Ukraine). In response, the sultan ordered the Grand Vizier, Sinan Pasha to invade Wallachia. The two princes needed the support of Sigismund Báthory who took advantage of the situation to make himself suzerain of Wallachia and Moldavia. When Aaron the Tyrant refused Sigismund Báthory's conditions, he was replaced by the latter's protégé, Ștefan Răzvan (1595) on the throne. In the meantime, however, the Poles had invaded Moldavia and replaced Ștefan Răzvan by Ieremia Movilă (1595–1606). In June 1598 Michael the Brave recognized the suzerainty of Emperor Rudolph II, who had promised to grant subsidies to him to finance his mercenaries.
On March 30, 1599 Sigismund Báthory abdicated the throne in favor of his cousin, Andrew Báthory (1599). The new prince was loyal to the Poles and promptly demanded that Michael the Brave accept his suzerainty. In the spring of 1600, he invaded Moldavia in the name of the emperor and established control over it. In July he even proclaimed himself "prince of Wallachia, Transylvania, and all of Moldavia" in Iași, thus bringing about the union of the three principalities.
However, the Hungarian noblemen, dissatisfied with the disorder, rebelled against his rule, and defeated him at Mirăslău on September 18, 1600. At the same time, the Poles invaded Moldavia and restored Ieremia Movilă to the throne; then they entered Wallachia, where Simion Movilă defeated Michael the Brave at Buzău. In this moment of crisis, Michael the Brave left for Prague to appeal to the emperor for support. He returned to Transylvania in July 1601 at the head of an imperial army. In the next decades, the princes of Transylvania, among them Gabriel Bethlen (1613–1629), made several unsuccessful attempts to unify Transylvania, Wallachia and Moldavia.
Wallachia and Moldavia fell back under the control of the Ottoman Empire after Michael the Brave's death. Radu Mihnea, prince of Wallachia (1611–1616, 1623–1626) and of Moldavia (1616–1623), was the first ruler to appoint Greeks from the Phanar district of Istanbul to high government posts.
