what contributed the most toward hernán cortés's first victory against the aztecs?

cortés had learned the local languages.

the aztecs were weakened by a smallpox epidemic.

tenochtitlán was not equipped to keep out invaders.

a native tribe allied with the spaniards to defeat the aztecs.

Which of the following arguments decided the debate over using the atomic bomb against japan in 1945? using the bomb would destroy the armaments still available to japanese forces in japan. using the bomb would demonstrate the power of the united states to the entire world. using the bomb would shorten the war and avoid heavy casualties among invading troops. using the bomb would enable allied forces to invade and take over the japanese mainland