Well I would say the 1st one, as the last one would injure people and the second and third one you know it's untrue so you really can't say that.
Answer:
its option: C
Explanation:
They are talking about different cultures/regions joining together, so, it is also called communism. if you need anymore help, please contact me if you can!
I believe it was the Chinese, because at that time southeastern China had a poor economy.