<P> 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 . </P> <P> Although termed a collapse, it did not mark the end of the Maya civilization but rather a shift away from the Southern Lowlands as a power center; 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 . </P> <P> Because parts of Maya civilization unambiguously continued, a number of scholars strongly dislike the term collapse . Regarding the proposed collapse, E.W. Andrews IV went as far as to say, "in my belief no such thing happened ." </P> <P> The Maya often recorded dates on monuments they built . Few dated monuments were being built circa 500--around ten per year in 514, for example . The number steadily increased to twenty per year by 672 and forty by around 750 . After this, the number of dated monuments begins to falter relatively quickly, collapsing back to ten by 800 and to zero by 900 . Likewise, recorded lists of kings complement this analysis . Altar Q at Copán shows a reign of kings from 426 to 763 . One last king not recorded on Altar Q was Ukit Took, "Patron of Flint", who was probably a usurper . The dynasty is believed to have collapsed entirely shortly thereafter . In Quirigua, twenty miles north of Copán, the last king Jade Sky began his rule between 895 and 900, and throughout the Maya area all kingdoms similarly fell around that time . </P>

What led to the fall of the mayans