I'm not sure about 2 and 3, but the Aztecs built Tenochtitlan because they saw an eagle holding a snake on a pr(i)ckly pear cactus and thought it was a sign from the gods. They based the flag off of that.
I added the "i" in parentheses because Brainly found it a bad word?
The answer is Ana necesita
The text says “Benacerraf studied immunology for his illness of not breathing well” so he is an expert in immunology
