The ritualistic killing of children was a common religious practice in some of the prominent pre-Colombian cultures. The Olmec civilization, which flourished in the tropical lowlands of south-central Mexico between 1200 and 400 BCE, may have been one such society. Evidence of the brutal practice was found in the El Manatí sacrificial bog, where the skeletons of an unknown number of infants were uncovered. How many times a year did the Aztecs celebrate religious festivals with child sacrifice? Discuss