Answer:
What was the main outcome of Joseph Stalin's collectivization?
Kulaks resisted collectivization. Millions were exiled to forced labor camps or killed as a result. The 1930s saw many horrors in the Soviet Union. Joseph Stalin's purges resulted in the execution of thousands, while millions more were sent to forced labor camps.
Therefore, it's B. Ukrainian leaders provoked a war with the Soviet Union by declaring Ukrainian independence.