Respuesta :
In the fall of 1763, a royal decree was issued that prohibited the North American colonists from establishing or maintaining settlements west of an imaginary line running down the crest of the Appalachian Mountains.
Answer:Its b
Explanation:After Britain won the Seven Years' War and gained land in North America, it issued the Royal Proclamation of 1763, which prohibited American colonists from settling west of Appalachia. The Treaty of Paris, which marked the end of the French and Indian War, granted Britain a great deal of valuable North American land.