Answer:
Option C.
Step-by-step explanation:
The Proclamation of 1763, is the right answer.
On 7th October 1763, George III, the then king of Great Britain issued the Royal Proclamation of 1763. It was issued after the French and Indian War and the Seven Years War when Great Britain seized the territories of France in North America. This proclamation declared all land concessions awarded by the state to British citizens who fought for the King against France ineffectual. Moreover, in this proclamation, imperial colonies west of the Appalachian Mountains were banned.