Before 1492, the Americas were far from “empty.” Cities like Cahokia, Tenochtitlán, and Pueblo towns thrived with advanced engineering, agriculture, and trade networks. This episode challenges the “virgin land” myth, tracing Indigenous innovation and diversity before European arrival. We dive into the causes of exploration, Columbus’s gamble, Cortés’s siege of Tenochtitlán, and Las Casas’s powerful critiques of Spanish brutality. We also unpack the Columbian Exchange—disease, crops, animals, and cultural blending—that reshaped both hemispheres. From monumental earthworks to world-shifting encounters, this episode reframes early American history and highlights stories too often left as footnotes.