The listing of an airport as open to the public in this directory merely indicates the airport operator's willingness to accommodate transient aircraft, and does not represent that the airport conforms with any Federal or local standards, or that it has been approved for use on the part of the general public.
The Calpulli. After the family, the basic unit of ancient Aztec government was the calpulli. Families didn't individually own land, the land was owned by a group of families, the calpulli. This structure of local government existed long before the Aztec empire. The leadership in the calpulli would be responsible for the basic needs of the group.
Politically human sacrifice was important in Aztec culture as a way to represent a social hierarchy between their own culture and the enemies surrounding their city. Additionally, it was a way to structure the society of the Aztec culture itself. The hierarchy of cities like Tenochtitlan were tiered with the Tlatoani (emperor) on the top, the remaining nobles (pipiltin) next who managed the land owned by the emperor.