Mikołajczyk immediately set about reviving the PSL , which soon became by far the largest party in Poland . He was helped , ironically , by the radical land reform pushed through with the support of the Communists , which created a new class of small farmers who became a firm political base for the PSL . The Communists knew they would never win a free election in Poland , and so they set about preventing one , despite the pledges given by Stalin at the Yalta Conference
Yalta Conference
Yalta Conference
Stanisław Mikołajczyk