What is the western border of the contiguous US?

Answer 1

Pacific Ocean
well there is not really any western border there

in the usual sense of a border between countries

but the western limit of united states sovereignty & jurisdiction

& the beginning of the no mans land that is embodied by & called the high seas

is an irregular but continuous line drawn 12 nautical miles seaward from the coast & any offshore islands

of the states of California & Oregon & Washington

& running all the way from the Mexican border in the south to the Canadian border in the north

Answer 2

The Atlantic Ocean borders the continental contiguous United States on the east; the Pacific Ocean is on the west; the Gulf of Mexico and Mexico are on the south; and Canada is to the north. The border between Canada and the United States is the longest unfortified border in the world. This is an indication of the friendly relations between the two countries. The Texas part of the border between Mexico and the United States includes the Rio Grande River. It has been advantageous to the United States to have oceans on two sides and a gulf on part of a third side. There are several reasons why it has been advantageous, including protection from enemies, possibilities for oceanic trade, and access to marine resources -- not to mention the beautiful beaches.

The US is bordered by the Atlantic and Pacific oceans, with Canada and Mexico on the north and south