What are mound builders know for?

Mound builders are known for the various cultures collectively termed "Mound Builders" were inhabitants of North America who, during a 5,000-year period, constructed various styles of earthen mounds for religious, ceremonial, burial, and elite residential purposes.

Explanation:

Mound Builders were inhabitants of North America who, over a period of 5,000 years, built various styles of clay mounds for residential and religious purposes. ... Since the 19th century, the predominant academic consensus has been that the hills were built by indigenous peoples of the Americas.

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tenochtitlan (also spelled tenochtitlán), located on an island near the western shore of lake texcoco in central mexico, was the capital city and religious centre of the aztec civilization. the traditional founding date of the city was 1345 ce and it remained the most important aztec centre until its destruction at the hands of the conquering spanish led by hernán cortés in 1521 ce, which led to the final collapse of the aztec empire.