The answer is c. The aztecs made pilgrimages to the ruins of Teotihuacan civilization. The even incorporated many Teotihuacano gods into their pantheon of gods.
Monsoon winds made trading across the Indian Ocean easier because they made trading more predictable and less dangerous. Without the monsoons when people could only rely sails and ors there was the possibility that their goods wouldn't make it on time and would go bad, or that the ship we sink.
Pretty much everyone except northeast . Because southeast there is Florida which is hot in summer and not that cold. Southwest it gets so hot and not really cold. Mid west does get very warm as well too