Final answer:
Cortés decided the best way to control the Aztec would be to conquer the capital, Tenochtitlan.
Step-by-step explanation:
Cortés decided the best way to control the Aztec would be to conquer the capital, Tenochtitlan. In his conquest of the Aztec Empire in 1521, Cortés formed alliances with native groups who resented Aztec rule, but the crux of his strategy was to capture Tenochtitlan and exert control over the empire. He used military force, siege tactics, and alliances to ultimately defeat the Aztecs and establish Spanish rule.