Classic Maya collapse

In archaeology, the classic Maya collapse is the decline of Maya civilization and abandonment of Maya cities in the southern Maya lowlands of Mesoamerica between the 8th and 9th centuries, at the end of the Classic Maya Period. Preclassic Maya experienced a similar collapse in the 2nd century.

The Classic Period of Mesoamerican chronology is generally defined as the period from 250 to 900, the last century of which is referred to as the Terminal Classic. The Classic Maya collapse is one of the greatest unsolved mysteries in archaeology. Urban centers of the southern lowlands, among them Palenque, Copán, Tikal, and Calakmul, went into decline during the 8th and 9th centuries and were abandoned shortly thereafter. Archaeologically, this decline is indicated by the cessation of monumental inscriptions and the reduction of large-scale architectural construction at the primary urban centers of the Classic Period.

Although termed a collapse, it did not mark the end of the Maya civilization; Northern Yucatán in particular prospered afterwards, although with very different artistic and architectural styles, and with much less use of monumental hieroglyphic writing. In the Post-Classic Period following the collapse, the state of Chichén Itzá built an empire that briefly united much of the Maya region, and centers such as Mayapán and Uxmal flourished, as did the Highland states of the K'iche' and Kaqchikel Maya. Independent Maya civilization continued until 1697 when the Spanish conquered Nojpetén, the last independent city-state. Millions of Maya people still inhabit the Yucatán peninsula today.

...
Wikipedia