United Socialist Party (Italy, 1949–1951)

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The United Socialist Party (Italian: Partito Socialista Unitario, PSU) was a socialist political party in Italy 1949-1951.

The party was founded by various Autonomist socialist groups after World War II and the proclamation of the Italian Republic.

On May 1, 1951, PSU fused with the Italian Socialist Workers' Party (founded by the reformist wing of the Italian Socialist Party in 1947 and led by Giuseppe Saragat) to give birth to the Italian Democratic Socialist Party (PSDI).