How did the Aztecs bild there empire?

The Aztecs built their empire through a combination of military conquest, strategic alliances, and tribute systems. Initially starting as a small tribe in the Valley of Mexico, they expanded by forming alliances with neighboring city-states and then conquering them through warfare. The incorporation of conquered peoples into their empire was facilitated by a tribute system, where subjugated regions provided goods, resources, and labor. This expansion allowed the Aztecs to amass wealth and power, solidifying their dominance in Mesoamerica.