The Pacific Ocean.
The Pacific Ocean borders both Canada and the US on the west
No country borders the US to the west. The western border of the US is the Pacific Ocean.
The US state which borders North Dakota on the west is Montana.
Pacific
Alaska
Pacific
The Atlantic Ocean borders the usa on the east. The Atlantic Ocean borders the usa on the east.
There is no country to the west of the United States. At some areas, Canada and Mexico borders the US to the west, but they are typically seen as the northern and southern borders respectfully.
Louisiana, Arkansas, Oklahoma, New Mexico.
Vermont
The pacific Ocean.
The Pacific Ocean.