B) They had a complex civilization that was destroyed by the Spanish conquerors.
By the time of the Spanish invasion, the Aztecs had devloped a strong civilizations, they had a system of trade & commerce and were quite wealthy. They also had a primitive form of "police" and a banking system.
By taxing farms businesses and imports
Buddhism and/or Confucianism is the way of thought or religion that offers rules or guidelines for a moral life. Hoped I helped :)
I think that one of the main ones most of the time is drought as we have such a dry and hot climate. But currently flooding is an issue, in Tasmania we just had the biggest flood since the 1921 floods (Look it up).
Northern parts of Australia are also prone to tropical cyclones
They came a long way and passed through many hands