Key Idea
Following Columbus's voyages, waves of Spanish soldiers arrived in the Americas. These conquistadors, or conquerors, were motivated by the search for gold, national glory, and the desire to spread Christianity. They sought to claim vast territories and immense wealth for the Spanish crown.
In 1519, an expedition led by Hernán Cortés landed in Mexico and encountered the powerful Aztec Empire. Despite being vastly outnumbered, the Spanish had key advantages, including steel weapons, armor, and horses. Crucially, Cortés formed alliances with local groups who were enemies of the Aztecs. The introduction of European diseases, like smallpox, also devastated the Aztec population, leading to the fall of their capital, Tenochtitlán, in 1521.