Kresy

Wikipedia:

People who moved from the East to the Recovered Territories talked amongst themselves about their return to Lwów and other eastern locations, and the German return to Silesia, as a result of World War III, in which Western Allies would defeat the Soviets. One of the adages of the postwar period was: „Just one atom bomb, and we will be back in Lwów again. Just second one is small but strong and we will be back in Wilno again.“ („Jedna bomba atomowa i wrócimy znów do Lwowa. Druga mała, ale silna i wrócimy znów do Wilna“).^[22][23] Polish settlers in former German areas were insecure about their future there until the 1970s (see Warschauer Kniefall). Eastern settlers did not feel at home in Lower Silesia, and as a result, they did not care about the machinery, households and farms abandoned by Germans. Lubomierz in 1945 was in good condition, but in the following years, Polish settlers from the area of Czortków in Podolia let it run down and become a ruin. The Germans were aware of it. In 1959, German sources wrote that Lower Silesia had been ruined by the Poles. Zdzisław Mach, a sociologist from the Jagiellonian University, explains that when Poles were forced to resettle in the West, which they resented, they had to leave the land they considered sacred and move to areas inhabited by the enemy. In addition, Communist authorities did not initially invest in the Recovered Territories because, like the settlers, for a long time they were unsure about the future of these lands. As Mach says, people in Western Poland for years lived „on their suitcases“, with all their belongings packed in case of return to the East.