I is the Continental Divide
Mountains. We use the term "divide" to mean the place on a mountain or ridge that separates two directions of water flow.
The 49th Parallel
western half
The Continental Divide is the US ridge that separates east-flowing rivers from west-flowing rivers. This divide runs along the crest of the Rocky Mountains and determines the direction in which water flows towards the Atlantic Ocean and the Pacific Ocean.
Continental Divide
The Mississippi River.
The Continental Divide is the watershed. east of the Divide rivers flow east, south or north. West of the Divide, rivers flow west, north and south. The Continental Divide is the Rockie Mountains.
The atmosphere separates us. It is a pool of gases.
The Bering Strait separates Russia and the US.
None. There is only the man-made border that separates the US from Mexico.
The Mississippi and the Missouri are two large US rivers.
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