describe the major physical. features of the western united states, then describe the major physical features of the eastern united states. How do these physical differences affect differences affect the climate and terrain of two regions

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The western United States of America have the Rocky Mountains runningthrough them, while the Eastern United States of America have the Appalachian Mountains running through them.  The reason why they are so different isbecause geologically the Rockies are "younger" than the Appalachians.

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