[Pre-Columbian city] Xochimilco was the most important city of the Xochimilca people, one of the Nahua tribes that migrated to the Mesoamerica region. The city was founded around 900 AD. It grew to become an important city in the Valley of the Mexico, until in 1430, the Mexica of Tenochtitlan succeeded in conquering the city. ==Etymology== ...
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http://en.wikipedia.org/wiki/Xochimilco_(Pre-Columbian_city)

district of Mexico City and delegación (legation), central Distrito Federal (Federal District), central Mexico. It lies at 7,461 feet (2,274 metres) ...
Found on
http://www.britannica.com/eb/a-z/x/2
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