United Socialist Party (Italy, 1949–1951)

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

On 1 May 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).