Answer: American Indian warriors
Explanation: Following a prior expedition driven by Juan de Grijalva to Yucatán in 1517, Hernán Cortés drove an expedition to Mexico.
After two years, in 1519, Cortés and his entourage set sail from Cuba for Mexico. The Spanish crusade against the Aztec Empire had its last triumph on August 13, 1521, when an alliance armed force of Spanish forces and native Tlaxcalan warriors driven by Cortés and Xicotencatl the Younger caught the ruler Cuauhtemoc and Tenochtitlan, the capital of the Aztec Empire. The fall of Tenochtitlan imprints the start of Spanish rule in central Mexico, and they built up their capital of Mexico City on the remnants of Tenochtitlan.