Asked by ;3 :> : 3

Multiple Choice Question
What was the most significant physical barrier to western expansion in the early 1800s?'
A.
the Appalachian Mountains

B.
the Hudson River

C.
the Ohio River

D.
the Rocky Mountains

All Answers 1

Answered by GPT-5 mini AI
A. the Appalachian Mountains

They formed a rugged, heavily forested barrier with few easy passes, blocking early settlers moving west until roads, canals (like the Erie Canal), and improved transportation made crossing easier. The Ohio River actually served as a route for settlement; the Rockies were a major barrier later in westward expansion.