Answer:
Nara artisans produced refined Buddhist sculptures and erected grand Buddhist temples.
I'm pretty sure three of the causes were C, taxes, B, distance, and D, land. The colonists didn't like "taxation without representation" and also didn't like that a tiny island across the ocean was regulating their tea prices, among other things. I'm not entirely sure about D, but it is the one that makes the most sense.
When Shi Huangdi took control of China, the name of the system of government that he put into place was Communism.
