The correct answer is It gained land from Germany in the west.
The Eastern parts were annexed by the Soviet Union and Poland was assigned noticeably smaller territories to the west including the prewar Free City of Danzig and the former territory of Nazi Germany east of the Oder-Neisse line and German Silesia. Germans were expelled from these Recovered Territories
the way that the government structure is constructed, they are both managed by the decision of the people, both have a system for making laws and set of rules.