In the Otomi language, it is referred to as "Maxei" or "Ndamaxei", which means ball game and the grand ball game respectively. In the Purépecha language it is referred to as "Créttaro", meaning place of crags, referring to the rocky hills of La Cañada. In the Mendocino Codex the town is called Tlaschco or Tlaxco, from the Nahuatl word for ball game. However, Querétaro most likely comes from k'eri ireta rho, meaning place of the great people, especially since during Aztec times about 15,000 people lived here. Querétaro has an Aztec glyph to represent it as it was a tributary province. In 1655, it received a coat of arms from the Spanish Crown. The word "Querétaro" was voted by 33,000 participants as "the most beautiful word in the Spanish language", before being approved by the Instituto Cervantes. In Pre-Columbian terminology, Querétaro literally means "the island of the blue salamanders." Nevertheless, other scholars suggest that it can mean "place of the reptiles" or "place of the giant rocks." The area was settled around A.D. 200 by Mesoamerican groups moving north, and archeological sites here show Teotihuacan influences. From the Classic Period, there were two population centers in this area called Toluquilla and Ranas. The mountain now known as El Cerrito was a ceremonial center, but was later abandoned for unknown reasons. In the later pre-Hispanic period, the area was populated by the Otomi, who had become sedentary urban dwellers with sophisticated politics by the time of the Aztec Empire, who referred to them as the Tlacetilli Otomi or "Otomi Nation/State" . This area was under control of the Otomi dominion of Xilotepeque in the 1440s, which in turn was subject to the Aztec Empire of Mexihco-Tenochtitlan. Under the reign of Ahuizotl in the late 15th century, the Aztecs administered the area directly, considering it a bulwark against the Chichimeca lands to the north. The Otomi were the most populous ethnicity in Xilotepec although there were other groups, primarily Chichimeca as well. These two groups are still found here today. During the pre-Hispanic and colonial times, the Otomi were organized into familial clan like groups with defined territories, living in stone, wood or adobe dwellings.