<P> The history of Mexico, a country in the southern portion of North America, covers a period of more than three millennia . First populated more than 13,000 years ago, the territory had complex indigenous civilizations before being conquered and colonized by the Spanish in the 16th century . One of the important aspects of Mesoamerican civilizations was their development of a form of writing, so that Mexico's written history stretches back hundreds of years before the arrival of the Spaniards in 1519 . This era before the arrival of Europeans is called variously the prehispanic era or the precolumbian era . </P> <P> The Aztec capital of Tenochtitlan became the Spanish capital Mexico City, which was and remains the most populous city in Mexico . </P>

Who conquered what is modern-day mexico in the 1500s
find me the text answering this question