The Socialist League of Palestine was a political organization in Mandate Palestine

Mandate Palestine

Mandate Palestine existed while the British Mandate for Palestine, which formally began in September 1923 and terminated in May 1948, was in effect...

. Established in 1936, it was connected to the left-Zionist Hashomer Hatzair

Hashomer Hatzair

Hashomer Hatzair is a Socialist–Zionist youth movement founded in 1913 in Galicia, Austria-Hungary, and was also the name of the group's political party in the Yishuv in the pre-1948 British Mandate of Palestine...

 movement. The Socialist League functioned as the urban ally of the Kibbutz Artzi movement. In 1946, the Socialist League and Kibbutz Artzi movement founded the Hashomer Hatzair Workers Party (one of the fore-runners of MAPAM

Mapam

Mapam was a political party in Israel and is one of the ancestors of the modern-day Meretz party.-History:Mapam was formed by a January 1948 merger of the Hashomer Hatzair Workers Party and Ahdut HaAvoda Poale Zion Movement. The party was originally Marxist-Zionist in its outlook and represented...

).