During the colonial period in british north amierca, the major geographic barrier to westward expansion was the

The answer is Appalachian Mountains

The Appalachian Mountains are located in the Eastern United States and for the earliest settlers, they posed as a barrier for westward expansion.


These are a large mountain range that spread across Georgia, Maryland, North Carolina, South Carolina, New York, New Jersey and numerous other US States, stretching as far as Newfoundland, Canada