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The Proclamation Line of 1763 was the physical feature which made it difficult for the american colonists to expand westward.

What is a Colonist?

This is referred to an individual which colonizes or settles in a new area at a point in time.

The Proclamation Line of 1763 was a boundary marked in the Appalachian Mountains at the Eastern Continental Divide which prohibited Anglo-American colonists from settling on lands in the east region.

Read more about The Proclamation Line of 1763 here https://brainly.com/question/19766471

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