The major landforms and waterways that the United States and Canada share are Great Lakes, Rocky Mountains, and St. Lawrence.
The climate regions that Canada and the United States share are humid continental, marine, highland and semiarid.
The appalachian mountains the rocky mountains and the great planes
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The United States and Canada share the longest unguarded international border in the world.
Canada and Mexico.
Canada and Mexico share a continent with the United States.
True. Canada and The United States share a border to the north of the US, and Mexico and the US share a border to the south of the United States (US).
There are three: United States, Belize and Guatemala.
Canada and Mexico share borders with the United States.
The United States and Greenland.
Canada and Mexico share a border with the United States.