United People's Party (Poland)
The United People's Party (Polish: Zjednoczone Stronnictwo Ludowe, ZSL) was an agrarian socialist political party in the People's Republic of Poland. It was formed on 27 November 1949 from the merger of the pro-Communist Stronnictwo Ludowe party with remnants of the independent Polish People's Party of Stanisław Mikołajczyk.
Source: Wikipedia — United People's Party (Poland) (CC BY-SA 4.0)