What decree prohibited colonists from settling west of the Appalachian Mountains?

The proclamation that prohibited colonists from settling west of the Appalachian Mountains is indeed the Proclamation of 1763. Issued by the British government, this decree was shaped by the need to stabilize relations with Native Americans following the French and Indian War.

By restricting westward expansion, the British aimed to prevent conflicts between settlers and Indigenous peoples, as well as to manage and control the newly acquired territories more effectively. The proclamation established a boundary along the Appalachian Mountains, and anyone wishing to settle beyond this line was required to obtain permission from the British authorities.

The correct option emphasizes the official title of this decree and reflects its historical significance in the context of colonial expansion and British governance. The other potential responses do not accurately describe this specific decree or may reflect common misconceptions about early American laws related to land settlement.