The main reason that the French and Indian war started was that the French moved into the Ohio country and built Fort Duquesne on the Ohio River.
Due to the construction of the fort, the first battle of the war, the Battle of Jumonville Glen, took place on May 28, 1754
The signing of the Treaty of Paris finalized the French and Indian war on February 10, 1763. France was forced to give up all of its land in North America. All of the land east of the Mississippi River went to Britain and the land west of the Mississippi went to Spain.