What is the French and Indian War?
It was the North American part of the Seven Years War; basically, only people from the USA call it the "French and Indian War". It was mostly fought by French colonists and their American Indian allies against British colonists along with their American Indian allies. Britain and her allies eventually won the Seven Years War, forcing France to give up most of her territory in North America.
The outcome of the French and Indian War would eventually lead to the American Revolutionary War, which started about 12 years after it ended.