.closest to what?
liquid for our body
The Bering Sea.
Mexico is the closest country south of the US, as it borders the US to the south.
Lake Michigan
grass
Mississippi river
The Atlantic Ocean
The Pacific Ocean.
Honolulu may have the closest airport to Tahiti.Pago Pago Airport in American Samoa is the closest US airport to Tahiti. The closest airport on the Continental US is San Diego International.Pago Pago Airport in American Samoa is the closest US airport to Tahiti. The closest airport on the Continental US is San Diego International.
The closest southern neighbor would be Mexico.
Russia's closest spot to the US is approximately 3 miles (from Alaska).