The Soviet Union had invaded the portions of eastern Poland assigned to it by the Molotov–Ribbentrop Pact two weeks after the German invasion of western Poland, followed by co-ordination with German forces in Poland. During the Occupation of East Poland by the Soviet Union, the Soviets liquidated the Polish state, and a German-Soviet meeting addressed the future structure of the "Polish region." Soviet authorities immediately started a campaign of sovietization of the newly Soviet-annexed areas. Soviet authorities collectivized agriculture, and nationalized and redistributed private and state-owned Polish property.