The French and British both wanted the Ohio river valley, and small conflicts over is expanded into a large scale war
The French built a series of forts along the Lake Ontario and Ohio River.
Washington and his troops were sent to expel the French. Once there, they found a small group of French soldiers, and set up Fort Necessity. However...
The French sent a large group of troops to Fort Necessity, forcing Washington and his troops to surrender
But before the conflict, the British wanted to create an alliance with the Iroquois in the Albany conference. This did not work, however, but the Iroquois provided some support through the Albany Plan of Union, the idea that the colonies form a federal government.
After a gruesome ambush on the British, they decided to cut off supplies from France.After 2 years, the war ended with the treaty of Paris, forcing France to give up its North American territory.