The American Revolution was fought between Great Britain and the thirteen colonies (the thirteen colonies were British colonies that fought for their independence from Britain). The American Revolution had political, social, and economic changes but mostly political changes.
The Seven Years War was about the dispute over who owned or controlled the unclaimed territories which started in 1754. The Seven Years War was a larger war between Great Britain and France while the French and Indian war was the North American conflict in the Seven Years War. The fact that Great Britain, France, and Iroquois Indians wanted to extend their land or claim the Ohio Company (land west of the Appalachian Mountains) helped provoke the outbreak of the seven year war. In addition to those reasons, the war began because George Washington (whose family helped found the Ohio Company) gave the command to fire on French soldiers. For the next decade, fighting continued, the war spread to Europe, and the war expanded