The British conquest of Acadia happened in 1710. Over the next 45 years, the Acadians refused to sign an unconditional oath of allegiance to the Crown. During this period, Acadians participated in various military operations against the British and maintained vital supply lines to the French fortress of Louisbourg and Fort Beausejour. During the French and Indian War (part of the Seven Years' War and known by that name in Canada and Europe), the British sought to neutralize the Acadian military threat and to interrupt their vital supply lines to Louisbourg by deporting Acadians from Acadia. The territory of Acadia was afterward divided and apportioned to various British colonies, now Canadian provinces: Nova Scotia, New Brunswick, Prince Edward Island, the Gaspe Peninsula in the province of Quebec. The deportation of the Acadians from these areas beginning in 1755 has become known as the Great Upheaval or "Le Grand Dérangement".