 
 <prompt> Wetin be di records of di civilization for Modern day Mexico city? Given di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```According to both indigenous American and European accounts and documents, American civilizations at the time of European encounter don achieve many accomplishments. For instance, the Aztecs build one of the largest cities for the world, Tenochtitlan, the ancient site of Mexico City, with an estimated population of 200,000. American civilizations also show impressive accomplishments for astronomy and mathematics. The domestication of maize or corn require thousands of years of selective breeding.``` 