How did the Aztecs build an empire?

The Aztecs built their empire through a combination of military conquest, strategic alliances, and tribute systems. They expanded their territory by defeating neighboring city-states and incorporating them into their empire, often requiring them to pay tribute in the form of goods, labor, or military support. Additionally, the Aztecs formed alliances with other tribes, which helped them to strengthen their position and expand their influence. Their capital, Tenochtitlan, became a powerful center of trade and culture, further solidifying their dominance in Mesoamerica.