Valle de Chalco
| Valle de Chalco Solidaridad | |
|---|---|
| Town & Municipality | |
 Location of Valle de Chalco Solidaridad in the State of Mexico |
|
| Coordinates: 19°17′30″N 98°56′20″W / 19.29167°N 98.93889°WCoordinates: 19°17′30″N 98°56′20″W / 19.29167°N 98.93889°W | |
| Country |
 Mexico
|
| State |
|
| Region | Amecameca |
| Metro area | Greater Mexico City |
| Municipal Status | November 9, 1994 |
| Municipal Seat | Xico |
| Government | |
| • Type | Ayuntamiento |
| • Municipal President | Jesús Sanchez Isidoro (2013-2015) |
| Area | |
| • Land | 46.53 km2 (17.97 sq mi) |
| • Water | 2.76 km2 (1.07 sq mi) |
| Elevation (of seat) | 2,240 m (7,350 ft) |
| Population (2010) | |
| • Municipality | 357,645 |
| Time zone | CST (UTC-6) |
| • Summer (DST) | CDT (UTC-5) |
| Postal code (of seat) | 56610 |
| Area code(s) | 55 |
| Demonym | Vallechalquense |
| Website | Official website (Spanish) |
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Valle de Chalco, officially named Valle de Chalco Solidaridad, is a municipality located in the State of Mexico, Mexico, on the eastern outskirts of the metropolitan area of Mexico City. Formerly part of the municipality of Chalco, it was split off as a separate entity in 1994, during the presidency of Salinas de Gortari, under his Programa Nacional de Solidaridad (National Solidarity Program). The municipality lies on the old bed of Lake Chalco, which was substantially drained in the nineteenth century. Technically, the municipal seat is Xico, after a high point of land that once formed an island, and now remains as a small hill within an otherwise monotonous, urban expanse. "Chalco" refers to the Chalca tribe, whose territory covered the area around the lake, prior to the Spanish Conquest of Mexico.
As of 2006, Chalco included part of the world's largest mega-slum, along with Ciudad Nezahualcoyotl and Ixtapaluca.
Archeologists date human settlement around Lake Chalco from about 2400 B.C, but major settlement occurred at approximately 1240 B.C., when the first tribe to call itself Chalca migrated to the region. This tribe was followed by others, ethnically and linguistically diverse, who added the name Chalca to their own. By 1410 the Chalca territory had developed into a loose confederation, divided into four, semi-sovereign domains. In the early 14th century the Mexica tribe of the Aztecs settled in nearby territory and began to build their city of Tenochitlan, now Mexico City. Over time, the Chalcas and Mexicas engaged in a number of ritual wars, known as Xōchiyaoyōtl or Flower Wars. During the Spanish Conquest of the Aztecs, the Chalca allied themselves with Hernán Cortés and his troops.
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