C would be the answer. The Silk Road was an ancient network of trade routes that were for centuries central to cultural interaction and trading.
It would be helpful if you provided a list so we can properly help you but my guess would have to be Taxes? I'm not entirely sure what the context of the question is so uh.. hope that's correct.
May I see the answers you can choose from? This is likely to be a multiple choice question, and I can't help without knowing the full question.
Answer:
It isn't a civilization because a civilization is mostly a group of a certain type who are the same or are apart of the same area. Whether the race or whatever that's in common only similarities are apart of there own like a tribe.
The Soviet Union’s goal was to have worldwide communism , so the U.S didn’t trust them from the start .
