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.
The answer would be C.War Hawks
They began using e-mail I've checked with three other sources and they say the same thing
<span>Answer:
Expanded multifaceted collaborations likewise brought about the dissemination of logical and innovative customs
1. Greek and Indian arithmetic on Muslim researchers
2. return of Greek science and logic to western Europe by means of Muslim al-Andaius in Iberia
3. spread of printing and explosive innovations from east Asia into the Islamic realms and into Western Europe</span>
C. It developed the world's largest pre-industrial city between 800 and 1431 CE.
