Part of the connection between the black sea and the Mediterranean Sea?

Answer steam fog;

Iwould say the answer is d

It's either  a. chiang kai-shek and the nationalists turned against the communists and killed hundreds of them. orb. hundreds of peasants were killed in shanghai during the period of warlord rule.  if we take into account that there was warlord rule at the time, i think that it's b (not entirely sure though)just my best thoughts.

B)  killing off supporters of his father to strengthen his own control.