Which outcome occurred when pre-Columbian chinampa agriculture expanded in the Valley of Mexico during the Post-Classic period?

💡 Explanation

When chinampa agriculture expanded, increased soil saturation occurred because the artificial islands, while fertile, added significant moisture to the subsoil, thus leading to land subsidence in valley areas. Therefore increased land subsidence resulted, rather than biodiversity loss, salinity, or decreased soil fertility which require different factors.

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