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.
1 The city was divided into four zones and twenty districts. 2  The Aztec Emperors built their palaces near the temple district. 3  They were large stone structures with as many as 50 rooms as well as their own gardens and ponds. 4  The Aztecs built a 10 mile long dike that sealed off a portion of the lake.