In 1519, the Aztec Empire was at the peak of its power. That year, conquistadors, or conquerors from Spain, arrived. They were led by Hernán Cortés (ehr-NAN kor-TEZ).
Montezuma II was uncertain about the visitors, but he invited them to stay in his palace. The Spaniards weren’t very good guests, however. For one thing, they began stealing Aztec jewelry.
“They had metalworkers melt down a lot of the jewelry and form it into gold bars,” Smith explains.
Soon the Spanish soldiers took Montezuma II prisoner. Historians aren’t sure exactly who killed him on June 30, 1520. But they agree that his death was the beginning of the end of the Aztec Empire. After fleeing Tenochtitlán that night, Cortés and his army returned about a year later. They conquered the Aztecs and set up a new colony.