noun, plural agencies. 1. an organization, company, or bureau that provides some service for another: a welfare agency. 2. a company having a franchise to represent another. 3. a governmental bureau, or an office that represents it.
Causeways and Canals. Early on in the history of the city the Aztecs built causeways and canals for transportation to and from the city. A causeway is a raised road that allowed the people to easily travel over the swampy and wet areas. There were three major causeways that led from the island city to the mainland.
In Central Mexico, north of the YucatÃ¡n, another Mesoamerican civilization thrived. The Aztec Empire was based in the Valley of Mexico, a wide, high elevation valley in the mountains of Central Mexico. In this wide valley, the Aztecs were unified as one people, who called themselves the Mexica.