Louis-Antoine, Comte de Bougainville (; 12 November 1729 – 31 August 1811) was a French military officer and explorer. After having served in the Seven Years' War and the American Revolutionary War, Bougainville later gained fame for his expeditions, including a circumnavigation of the globe in a scientific expedition in 1763, the first recorded settlement on the Falkland Islands, and voyages into the Pacific Ocean. Bougainville Island of Papua New Guinea as well as the flowering plant Bougainvillea are named in his honour.

Early life

Bougainville was born in Paris on November 12, 1729, the youngest of three children to Marie-Françoise d'Arboulin and Pierre-Yves de Bougainville. His father had entered into the minor nobility due to his service as notary for the state and his mother died when he was five. He was then raised by his older brother Jean-Pierre with the help of an aunt. His father had pushed his sons to also take up a legal career and Bougainville enrolled in the University of Paris. While here, he took an interest in philosophy and mathematics, studying under mathematician Jean le Rond d'Alembert.

At the age of twenty-five, Bougainville published the first volume of his treatise on integral calculus, Traité de calcul intégral. His work was presented to the French Academy of Sciences and he received the patronage of Academy member and War Minister, the Comte d’Argenson. Several years later in 1756 he published the second volume and that same year he was made a member of the Royal Society of London while in England on a diplomatic mission.

Shipped back to Europe along with the other French officers, all deprived of military honors by the victors, Bougainville was prohibited by the terms of surrender from any further active duty against the British. He spent the remaining years of the Seven Years' War (1761 to 1763) as a diplomat, helping to negotiate the Treaty of Paris. Under this France ceded most of New France east of the Mississippi River to Great Britain.

First French circumnavigation

thumb|upright=1.7|Map of the trip with French names as they stood at the times

thumb|upright=1.7|Voyage autour du monde, Paris, 1772

Îles Malouines settlement

After the peace, the French decided to colonise the "Îles Malouines" (the Falkland Islands) in the South Atlantic. These islands were at that time almost unknown. At his own expense, Bougainville undertook the task of resettling Acadians who had been deported to France by the British because of their refusal to sign loyalty oaths.

On 15 September 1763, Bougainville set out from France with the frigate L'Aigle (Eagle) (captained by Nicolas Pierre Duclos-Guyot) and the sloop Le Sphinx (Sphinx) (captained by François Chenard de la Giraudais). This expedition included the naturalist and writer Antoine-Joseph Pernety (known as Dom Pernety), the priest and chronicler accompanying the expedition, together with the engineer and geographer Lhuillier de la Serre.

The expedition arrived in late January 1764 in French Bay (later renamed Berkeley Sound) in the Falkland Islands. They landed at Port Louis, named after King Louis XV. A formal ceremony of possession of the Islands was held on 5 April 1764, after which Bougainville and Pernety returned to France. Louis XV formally ratified possession on 12 September 1764.</blockquote>

Circumnavigation

thumb|upright=1.5|The [[French frigate Boudeuse|Boudeuse, of Louis Antoine de Bougainville]]

In 1766, Bougainville received from Louis XV permission to circumnavigate the globe. He would become the 14th navigator, and the first Frenchman, to sail around the world (though some are led to believe that Richard of Normandie, who was part of the fleet of Ferdinand Magellan during his circumnavigation, was the first Frenchman to do so). Completion of his mission bolstered the prestige of France following its defeats during the Seven Years' War. This was the first expedition to circumnavigate the globe with professional naturalists and geographers aboard.

Bougainville left Nantes on 15 November 1766 with two ships: Boudeuse (captain : Nicolas Pierre Duclos-Guyot) and the Étoile (commanded by François Chenard de la Giraudais). This was a large expedition, with a crew of 214 aboard Boudeuse and 116 aboard Étoile. Included in the party was the botanist Philibert Commerçon (who named the flower Bougainvillea) and his valet. Commerson's valet was later revealed to be a woman Jeanne Barret (also Baré or Baret); she would become the first woman known to circumnavigate the globe. Other notable people on this expedition were the astronomer Pierre-Antoine Veron; the surgeon of Boudeuse Dr. Louis-Claude Laporte; the surgeon of the Étoile Dr. François Vives; the engineer and cartographer aboard the Étoile Charles Routier de Romainville; and the writer and historian Louis-Antoine Starot de Saint-Germain.

Bougainville brought to France a Tahitian named Ahutoru who volunteered to come with him. In France, Bougainville introduced Ahutoru to the high society, including introducing him to the King and Queen at Versailles. Bougainville also underwrote part of the costs for Ahutoru's return to Tahiti after a two-year absence. The voyage took place under Marion Dufresne, but Ahutoru died en route of smallpox in October 1771.