 In 1758, the British mounted an attack on New France by sea and took the French fort at Louisbourg.On September 13, 1759, the British forces of General James Wolfe defeated those of French General Louis-Joseph de Montcalm on the Plains of Abraham outside Quebec City.With the exception of the small islands of Saint Pierre and Miquelon, located off the coast of Newfoundland, France ceded its North American possessions to Great Britain through the Treaty of Paris (1763) in favour of gaining the island of Guadeloupe for its then-lucrative sugar cane industry.