The Spanish conquest of the Aztec Empire was one of the most significant events in the Spanish colonization of the Americas. The campaign began in February 1519, and was declared victorious on August 13, 1521, when a coalition army of Spanish forces and native Tlaxcalan warriors led by Hernán Cortés and Xicotencatl the Younger captured Tenochtitlan, the capital of the Aztec Empire. Moctezuma was convinced that Cortés was a god, as the Spanish brought horses and guns, which the Aztecs had never seen before.