There was a war between France and England. It was near the Ohio River. In Europe it was called the 7 year was, and in America was called the Indian War. This started to cause the French Revolution. This war took Asia and the west Indies and Africa.
From 1756-1757 france destroyed British forts, this forts were the Lake Antario and Lake George. Indians raided settlements in Pennsylvania and Virginia,
In 17-58-1759 the war shipped, the British managed to act the france shipping to America. As a result the Indian deserted the French, this allowed the british captured the ports at the Saint Lourence River.
In 1760 the British captured the montreal and surrender the rest of Canada. This includes the forts around the great lakes.