How did Cortés take Tenochtitlan for Spain? He killed the emperor.1He surrounded it and attacked.2He sent the Aztecs away.3He flooded it.

Hernán Cortés, a Spanish Conquistador, took Tenochtitlan (the capital of the Aztec Empire) for Spain through a series of strategic steps:

1. Establishing alliances: Cortés first established alliances with indigenous groups that were enemies of the Aztecs. This helped him gather a large force to fight against the Aztecs.

2. Capturing the emperor: Cortés captured the Aztec emperor, Moctezuma II, which destabilized the Aztec Empire. However, it's important to note that Moctezuma was not killed by Cortés, but during a conflict between the Spanish forces and the Aztecs.

3. Siege of Tenochtitlan: Cortés and his allies laid siege to Tenochtitlan, cutting off supplies and weakening the city. This was a crucial step in taking the city.

4. Final attack: After months of siege, Cortés launched a final attack on the city. The Aztecs, weakened by the siege and a smallpox epidemic, were unable to resist and the city fell to the Spanish.

5. Expulsion of the Aztecs: After taking the city, Cortés expelled the remaining Aztecs.

6. Flooding: While Cortés did not flood the city, the siege and subsequent battles led to the destruction of the city's infrastructure, including its complex system of canals, which resulted in flooding.

In summary, Cortés took Tenochtitlan for Spain through a combination of strategic alliances, capturing the emperor, laying siege to the city, and launching a final attack. The expulsion of the Aztecs and the destruction of the city's infrastructure were consequences of these actions.