the population was about 300,000
Those were stone bridges and levees, to separate the salty water from the fresh water used by Tenochtitlan's population.
Tenochtitlan had a population of 200,000 - 250,000 people, four times the population of London at the time (1521). It was also built atop some islands on Lake Texcoco, interconnected by canals and passageways - much like the city of Venice, Italy.
It is widely believed that Tenochtitlan had a population of approximately 200,000 people in 1519. After the Fall of Tenochtitlan in 1521 at the hands of Spanish conquistadors, it is believed such city lost half its population down to 100,000.
As of 2008, Mexico City was populated by some 19,028,000 inhabitants. It is estimated that by 1519, before the population was decimated by the smallpox plague brought by Hernan Cortes and his Spanish Conquistadores, there were around 200,000 Aztecs living in Tenochtitlan.
Tenochtitlan was home of the Aztecs.
The Aztec Empire in 1519 had a population of about 5 Million people. Tenochtitlan (site now of Mexico City) had a population of about 200,000.
aztec's built the tenochtitlan!
Tenochtitlan was created in 1325.
Mexico City's original name was Tenochtitlan.
Relative population size is the size of an area's population as it compares to similar areas' populations. For example, the relative population size of a country would be what rank it had compared to the population of other countries.
A prey
The population size of a predator species is directly controlled the availability (population size, etc.) of its prey species.