How did competition for land in North America lead to the French and Indian War?

Competition for land in North America led to the French and Indian War because mainly of the Ohio Territory. The British and the French pushed wanted to extend their colonies into the land west of the Appalachian Mountains. Many Natives had to leave their homes and many were slaughtered and killed by the French if they did not leave the land. This caused an outrage as the Natives did not want to leave which caused the war to begin.