Group of Mesoamerican Indians who between &AD; 250 and 900 developed one of the Western Hemisphere's greatest civilizations. By &AD; 200 they had developed cities containing palaces, temples, plazas, and ball courts. They used stone tools to quarry the immense quantities of stone needed for those structures; their sculpture and relief carving were also highly developed. Mayan hieroglyphic writing survives in books and inscriptions. Mayan mathematics featured positional notation and the use of the zero; Mayan astronomy used an accurately determined solar year and precise tables of the positions of Venus and the Moon.
Calendrical accuracy was important for the elaborate rituals and ceremonies of the Mayan religion, which was based on a pantheon of gods. Ritual bloodletting, torture, and human sacrifice were employed in an attempt to propitiate the gods, ensure fertility, and stave off cosmic chaos. At the height of its Classic period, Mayan civilization included more than 40 cities of 5,000–50,000 people. After 900 the civilization declined rapidly for unknown reasons. Descendants of the Maya are now subsistence farmers in southern Mexico and Guatemala. &Seealso; Chichén Itzá; Copán; Lacandón; Maya codices; Maya language; Quiché; Tikal; Tzeltal; Tzotzil; Uxmal.
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