Mexico was and is an original country in North America. This is in modern times, when the political subdivision of a continent is a country. Parts of Mexico, as defined by Spanish conquest are now parts of the United States. New Mexico was once part of Mexico, as was Arizona and California. Mexico itself, is not a part of the United States, but parts of the United States were once Mexico.
all of these
Both share a common border, both are in the Southwestern United States; both border the country of Mexico and both used to belong to Mexico before the Mexican-American War (1846-1848).
France
RUSSIA
Colombia .
Mexico.
Spain
spain
Texas never moved, I believe the Question is "To which Nation was Texas a part before it became part of the U.S." that answer would be Mexico
all of these
Mexico, which is another country.
Both share a common border, both are in the Southwestern United States; both border the country of Mexico and both used to belong to Mexico before the Mexican-American War (1846-1848).
Brazil does not belong; it is a country where Portuguese is spoken (contrary to Peru, Cuba and Mexico, where Spanish is spoken).
Mexico won nevada over in 1821.
Alaska because it is a State and not a country.
It was a US Territory.
Denmark.