Washington which borders Oregon and Idaho,
New Mexico. Mexico is a country bordering the United States and New Mexico, a state in the the United States, has the same name. The only state in the US that has the name of a country that borders the US in it is New Mexico. The other country is Mexico.
Maine borders only one other state.
Maine borders only one other state, which is New Hampshire.
Hawaii and Alaska do not share borders with any other US states if that's what you're asking.
Maine
Maine
Tennessee
Maine
Maine
New Mexico. Mexico is a country bordering the United States and New Mexico, a state in the the United States, has the same name. The only state in the US that has the name of a country that borders the US in it is New Mexico. The other country is Mexico.
Augusta (Maine)