Final answer:
Jewish Europeans immigrated to Palestine after World War II due to ongoing attacks in Russia and Eastern Europe, lack of resources to go to the United States, and the belief among Zionists that leaving Europe entirely was crucial to escape further persecution.
Step-by-step explanation:
The main reason Jewish Europeans immigrated to Palestine after World War II was because of the attacks in Russia and Eastern Europe that continued to threaten them. Many Jewish Europeans didn't have the funds or connections to emigrate to the United States, and Zionists believed that leaving Europe entirely was necessary to escape further persecution. While the United Nations did support the creation of Israel through the Balfour Declaration, this alone was not the main reason for Jewish European immigration to Palestine.
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