The most important would be the chinampa system -- often mistakenly known as "floating gardens" -- where they grew crops. It consisted of building artificial islands in swampy or wet terrain.
See the related links for some examples.
It was in central Mexico.
The Aztec Empire included parts of central and eastern Mexico.
Central mexico
On central Mexico.
the Aztec calendar can be found anywhere, but it originated in Central Mexico where the Aztecs settled.
the aztec people lived in central mexico near lake texcoco
On central Mexico, site of present-day Mexico City.
Yes, the domesticated turkey is attributed to the Aztec civilization, in central Mexico.
Mexico (capital: Mexico City).
The Aztec civilization
the Aztec
The Aztec Empire was located in Mexico- the Valley of Mexico to be exact. The capital, Tenochtitlan, was built on raised islets in Lake Texcoco.