During the Late Postclassic period (1300–1521 CE), marked by pervasive militarism, the Mexica—also known as the Aztecs or Tenochca—rose to prominence. In 1325 CE (2 House in the Mexica calendar), they founded their capital, Mexico-Tenochtitlan, quickly clashing with neighboring groups. Through strategic alliances and military victories, they established dominance.

By the mid-15th century, the Mexica world had come into full view, with their political, religious, and military ideals influencing a vast swath of Mesoamerica.

—Felipe Solís Olguín