What problems did Soviet industry face?

Rationing cards and queues, which had become hallmarks of war communism, had disappeared. However, due to prolonged war, low harvests, and several natural disasters the Soviet economy was still in trouble, particularly its agricultural sector. In 1921, widespread famine broke out in the Volga-Ural region.

the answer is a

their confiscation of contraband and the sinking if the lusitania