A rainstorm revealed a tunnel beneath this city that yielded a saucer shaped like a flying dog, greenstone crocodile teeth, and liquid mercury used to represent lakes. (10[1])Murals found in this city may denote important people with a three-tasseled headdress. The multiethnic merchant class of this city may have launched (10[1])a fire that destroyed its temples and Xalla (“SHAH-lah”) palace, beginning the city’s collapse around 550 CE alongside abrupt droughts. This city’s influence likely spread the sloped talud-tablero construction style found at Monte Albán and Tikal. This city’s Nahuatl name translates roughly to “place where Gods were (10[1])born,” (10[1])as the Aztecs claimed descent from its builders. For 10 points, name this city where the Avenue of the Dead links the Pyramids of the Sun and Moon, (10[1]-5[1])an ancient city in the Valley of Mexico. ■END■ (10[4]0[1])