Why was it easy for Stalin to destroy the leaders of the Polish Communist Party?

Stalin found it easy to destroy the leaders of the Polish Communist Party due to their lack of independent power and the reliance on the Soviet Union for support. The purges were facilitated by the general atmosphere of fear and loyalty to Stalin among party members, which discouraged dissent. Additionally, Stalin aimed to consolidate control over Eastern Europe after World War II, viewing the Polish Communist leadership as a potential threat to his authority. This led to the systematic elimination of those he deemed unreliable or too nationalist.