Final answer:
The natural geographic barriers of protection for the United States are the Atlantic and Pacific Oceans, as well as the mountain ranges.
Step-by-step explanation:
The natural geographic barriers of protection for the United States are the Atlantic Ocean to the east and the Pacific Ocean to the west. These vast bodies of water act as natural barriers, making it more difficult for invaders to launch direct attacks on the country. Additionally, the mountain ranges such as the Rocky Mountains in the west and the Appalachian Mountains in the east provide natural defenses, as they are challenging to traverse.
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