Question

which region lies to the East of the rocky mountains in north america

Answer 1

North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere; it is also considered by some to be a northern subcontinent of the Americas.[3][4] It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea.

Answer 2

The reason which lies to the east of the Rocky mountains in North America is Canada or Eastern system.
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