You can cross the US by river only if you are going north to south (south to north is harder) but not if you are going east to west, or west to east.
No East US
The Atlantic (east) and the Pacific (west).
The long river that is the border between the east and West United States is the Mississippi River. The Mississippi is the longest river in the United States.
London
The Mississippi River is the geographical feature that divides the eastern and western United States.
True.
Mississippi
the St Lawrence River mouth
The eastern and western sections of the United States are divided by the Mississippi River.
In the Eastern US, there are twenty-six states. The recognized border between the west and the east is the Mississippi River.
The river that separates the east and west U.S. is usually considered the Mississippi.