Mexico

Mexico (メキシコ), officially the United Mexican States, is a country located in the southern portion of North America. Mexico shares boarders with three countries; the United States of America to the north and Guatemala and Belize to the southeast.

Background
Before it was colonized, Mexico was home to many great civilizations, like the Mayan and the Aztec civilizations, developing distinct cultures and religions, of which the Aztec Mythology would become the most well-known. When the Spanish arrived and invaded in the 16th century, the Aztecs tried to stop their invasion by creating a Magic God, Tezcatlipoca, to no avail.

The border between the United Sates and Mexico near the shore of the Pacific Ocean was where the front line base of the Return of the Winged One was situated. The Sixth Sense Headquarters (第六の感覚本社) is located in, Mexico.

Toaru Majutsu no Index Light Novel Volume SS2
On the Second Friday of October, Misaka 14333 was one of the Sisters sent to Gemstone Mining research organizations around the world. She was sent to Guadalajara, Mexico, at the Sixth Sense Headquarters, to destroy the facilities and rescue the gemstone there. During her periodic progress report, she had just blown up the main entrance to the research building.