Which of the following best explains why the expansion of the American colonies was limited under British rule?

• A. The proclamation of 1763 prevented colonists from migrating west
• B. The Declaration of Independence restricted settlement
• C. The Magna Carta limited colonial expansion
• D. The Navigation Acts prohibited expansion past the coast

Answer: (A)

The main idea is that imperial policy limited where colonists could settle to keep the frontier safe and manageable. After the French and Indian War, Britain issued the Proclamation of 1763, drawing a boundary along the Appalachian Mountains and forbidding colonial settlement west of that line. This was meant to reduce costly wars with Native Americans, stabilize frontier defense, and keep the colonies from expanding into newly acquired lands without imperial oversight. While many colonists were eager to move west and ignored the restriction, the proclamation set the official limit on expansion and helped fuel tensions between Britain and its colonies.

The other events don’t explain this limitation as directly. The Declaration of Independence came later and declared separation, not a settlement boundary. The Magna Carta dates from medieval England and has no role in colonial land policies in the Americas. The Navigation Acts regulated trade routes and duties, not westward settlement.