Final answer:
The Cumberland Gap is part of the Appalachians and is a significant passageway through the Appalachian Mountains.
Step-by-step explanation:
The Cumberland Gap is part of the Appalachians. It is a natural passageway through the Appalachian Mountains, located at the border of Kentucky, Tennessee, and Virginia in the United States. This gap played a significant role in historic migrations and exploration, including the westward expansion of America.
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