Answer:
After the prewar Communist Party of Poland was eliminated in Stalin's purges in 1938 (some five thousand Polish communists were brought to Russia and killed), a group of survivors led by Marceli Nowotko, Bolesław Mołojec and Paweł Finder convinced in 1941 the Soviets in Moscow of the need to reestablish a Polish party.
Step-by-step explanation:
from wikipedia