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North America, Continent, Western Hemisphere. The third-largest continent on earth, it lies mostly between the Arctic Circle and the Tropic of Cancer. It is almost completely surrounded by bodies of water, including the Pacific Ocean, the Bering Sea and Strait, the Arctic Ocean, the Atlantic Ocean, and the Caribbean Sea and Gulf of Mexico.
Northern America is the northernmost subregion of North America as well as the northernmost region in the Americas. The boundaries may be drawn slightly differently. In one definition, it lies directly north of Middle America. [2] . Northern America's land frontier with the rest of North America then coincides with the Mexico–United States border.
North America, the third-largest continent, extends from the tiny Aleutian Islands in the northwest to the Isthmus of Panama in the south. North America’s physical geography , environment and resources , and human geography can be considered separately.
