Tenochtitlan was the capital of the Aztec Empire. it was a busy and bustling city where there is daily more than 60000 souls, buying and selling and were are found all the kinds of merchandise produced in these countrys.
I think both Imperial China and Rome were both able to create a strict government. They were able to create a social stratification that allows people to function according to their designated roles, They were able to enforce a strong military which leads to successful conquest of neighboring states.
Answer: Winds that blow from the west.
Explanation: They're called Westerlies. Also, they are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees. :D
