The Atlantic Ocean.
The Northern Atlantic
Lake Erie
That would be the Rio Grande river.
No body of water separates the US. from Mexico
The Bering Sea.
The Bering Strait separates Russia and the US.
bering sea
The body of water that separates The Bahamas from the United States is the Florida Straits. This narrow body of water lies between the southeastern coast of Florida and the northernmost islands of The Bahamas. It is known for its deep waters and is an important maritime route.
The Bering Strait
Bering Sea
Canada didn't sell it to the US; Russia did. Canada owned it first, then Russia, now the US. Russia found it useless and hard to get to because of the water body that separated it from Russia.