
21st century map depicting the countries of the world

Enterprise (NX-01) flies over Mexico
Mexico was a country on the North American continent on Earth, in a region previously home to the Olmec, Maya and Aztec cultures. The country had coastlines on the Pacific Ocean and the Gulf of Mexico. The capital city was Mexico City. Something or someone from mexico was called Mexican, and the country name was abbreviated MX. (TOS-R: "The Cage"; TNG-R: "The Neutral Zone")
In the 19th century, Mexico successfully gained its independence from Spain as the result of using violence as a political instrument. (TNG: "The High Ground")
In 1836, Mexican troops lead by General Santa Anna invaded Texas following their declaration of independence from Mexico, with the intentions of quelling the rebel Texans. Santa Anna's greatest success was at the Battle of the Alamo, during which 2,000 Mexican troops attacked the Texans fortified Alamo mission and killed all 188 Texan rebels. (DS9: "Once More Unto the Breach")
In 1962, Vic Fontaine sang the song "Come Fly with Me" at his nightclub. One of the exotic locales mentioned in the song was the Mexican city of Acapulco. (DS9: "His Way")
A 21st century-era political map of Earth was stored in the USS Enterprise's library computer in 2254. The location of Mexico was labeled on this map. This map was among the materials viewed by the Talosians when they scanned the Enterprise computer. (TOS-R: "The Cage")
During the mid-22nd century, Malcolm Reed once visited a spa in Mexico, claiming that it was one of the most relaxing places he had ever been. (ENT: "Sleeping Dogs")
Notable Mexicans
Cities
Other locations

20th century era map of the northern hemisphere