Communism
This is an example of central planning in which everything is directed by the government. These types of economies tend not to do well because as the question states the incentive for individuals is taken away.
Answer:
It prohibited Japan from having an army
Explanation:
helped the Aztec farm more productive - chinampas
helped the Inca travel long distances and communicate with their neighbors - rope bridges
helped the Maya view astronomical phenomena such as eclipses with the naked eye - pyramaid at Chichen Itza
-The stock market crash in 1929.
-Bank Failures
-Reduction in purchasing across the board
-American economic policy with Europe
-Drought Conditions
Take your pick