Ancient history

How did the Aztecs know where to build there capital city?

The Mexicas (the originators of the Aztec civilisation) were instructed to build their capital Tenochtitlan by none other than the Aztec God, Huitzilopochtli. To do so, the Mexica people were ordered to look out for an eagle resting atop a cactus with a serpent in its beak.