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Topic - Xochimilco

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In this July 13, 2017 photo, a farmer takes advantage of a motorized boat to move faster along the channels of Xochimilco to his floating farm known as a "chinampa" in Mexico City. Xochimilco, on the far southern edge of Mexico City, has been a breadbasket for the Valley of Mexico since before the Aztec Empire, when farmers first created the “floating” islands bound to the shallow canal beds through layers of sediment and willow roots. (AP Photo/Marco Ugarte)