    Sentence 1: What campaign did the Communist regime  initiate after WWII?    Sentence 2: After World War IL under a Communist regime  set up by the conquering Soviets, the “Bricks for Warsaw”  campaign was initiated, and large prefabricated housing  projects were erected in Warsaw to address the housing  shortage, along with other typical buildings of an Eastern  Bloc cify, such as the Palace of Culture and Science, a gift  from the Soviet Union.