USA HISTORY

Detailed explanation-1: -Appalachian Mountains served as the western boundary for British colonial settlements prior to the Revolutionary War. Proclamation Line of 1763-Border established by Great Britain in order to avoid conflicts between American colonists and Native Americans.

Detailed explanation-2: -They issued the Royal Proclamation of 1763, which declared the boundaries of the thirteen colonies as the Appalachian Mountains.

Detailed explanation-3: -The colonies were located along the Atlantic Ocean, with New France to the north and New Spain to the south. The Appalachian Mountains formed a natural boundary to the west.

Detailed explanation-4: -Appalachian Mountains: They acted as a barrier between British colonists and Native Americans/French settlers before the revolutionary war, but not after. It was also known as the Proclamation Line.

Detailed explanation-5: -At the end of the Revolutionary War, which geographic feature became the western boundary of the United States? E (The Mississippi River became the west most boundary.)