The correct answer to this open question is the following.
Within the patterns of state formation basic to the Americas, the types of states that emerged in Meso-America and the Andes during the period 600-1550 were the following.
During those years in Mesoamerica, the impressive civilization at Teotihuacan, México, was the most important in the region. Its great city with the Avenue of the Death, the Pyramids of the Sun, Moon, and Quetzalcoatl, made Teotihuacan the center of power of economy in those years.
After Teotihuacan, the Toltecs from Tula, Hidalgo, México(968 AD), represented a dominant state in the region until the surge of the Great Aztec Empire in Tenochtitlan(modern-day downtown México City). In 1156, Tula, the capital city of the Toltecs was destroyed. And by 1325, the Aztecs founded the Great Tenochtitlán.
In South America, in 600, Tiwuanako people controlled the region until 1000. By 700, the Moche dominated the Andine lands and the Peruvian shores. By 1438m the Incas started to spread its dominion over the Andes.
