From East to West: Texas, New Mexico, Arizona, and California.
Mexico is the country that lies to the south of the United States.
5 Texas, Louisiana, Mississippi, Alabama, Florida
the united states
The Aztec Empire.
Three: Belize, Guatemala, and the USA.
El Paso would qualify, as it is exactly at the US-Mexico border.
Idaho has a border with six US States plus Canada. Oklahoma has a border with six US States. Utah has a border with six US States. Wyoming has a border with six US States.
Mexio!
texas, mexio, and oklahoma.
Alaska and Hawaii are US states that don't border other US states.
No states share a border with Russia. Alaska has a common maritime border in the Barents Sea.
The US states that border Alberta are Montana and Idaho.