Context: After World War II, due to Ukrainian collaborationism with the Axis powers in an attempt to gain independence, Moscow changed its policy towards repression of the Ukrainian language.

Question: After what war did Moscow begin to repress the Ukrainian language?
Answer: World War II

Question: Why did Moscow begin to repress the Ukrainian language?
Answer: Ukrainian collaborationism with the Axis powers

Question: Why did Ukrainians collaborate with the Axis?
Answer: to gain independence

Question: What happened to Moscow policy after World War I?
Answer: Unanswerable

Question: When did the Ukraine change its policy towards repression of the Moscow language?
Answer: Unanswerable

Question: When did collaboration between Moscow and the Axis powers cause the Ukraine to change policies?
Answer: Unanswerable

Question: Whose collaboration caused Moscow to change its policy regarding independence? 
Answer: Unanswerable

Question: Who was in collaboration with Moscow?
Answer: Unanswerable