Answer:
Proclamation of 1763, prohibited American colonists from settling west of Appalachia
Step-by-step explanation:
After the war which is known as Seven Years war, due to the fact that it lasted for seven years, which British won, thereby gaining majority of North American land, thus ,the British issued the Royal proclamation of 1763 restricted or prohibited the American colonists from settling west of Appalachia; that is, to settle anywhere other than the Atlantic Coast.