According to both indigenous American and European accounts and documents, American civilizations at the time of European encounter had achieved many accomplishments. For instance, the Aztecs built one of the largest cities in the world, Tenochtitlan, the ancient site of Mexico City, with an estimated population of 200,000. American civilizations also displayed impressive accomplishments in astronomy and mathematics. The domestication of maize or corn required thousands of years of selective breeding. COUNT 5
QSN1 What had the civilizations in the Americas achieved by the time the Europeans encountered them? ANS1 many accomplishments QSN2 What had the Aztec civilization constructed? ANS2 one of the largest cities in the world QSN3 How big was the population of the Aztec cit of Tenochtitlan? ANS3 200,000 QSN4 Astronomy and mathematics were also accomplishments of which civilizations? ANS4 American QSN5 How many years of selective breeding did it take to domesticate maize? ANS5 thousands