History 99 what was the main cause of the french and indian war? question 2 options: a)france declared war on the native tribes who lived in colonial france. b)france and britain were in dispute over the land in the ohio river valley. c)france and britain declared war on spain, wanting the gold spain had found. d)france was mistreating its colonists. why was the proclamation of 1763 important? question 3 options: a)colonists were required to quarter french soldiers after the french and indian war. b)colonists wanted to expand into the frontier, and the proclamation forbade settlement past the appalachian mountains. c)colonists were afraid to cross the appalachian mountains, and the proclamation required them to do so. d)soldiers were required to explore the appalachian mountains before they could return to england.