By ship
The Jews migrated to Palestine after World War 2.
nowhere.
unpleasant.
Sweden was neutral in World War 2, so Swedish Jews were safe in Sweden.
About 65,000 Jews were killed in Austria during the Holocaust.
Jews practiced their religion quite openly during World War 1 in most countries where Jews lived. In Czarist Russia, there were some difficulties in practicing Judaism, but elsewhere it was not an issue. It was during World War 2 that being Jewish became an issue.
In World War 1 the Jews were not specifically targeted. Perhaps you are thinking of World War 2 and the Holocaust?
world war 2
At the start of World War 2 was Poland with 3.3 Million Jews. by the end of World War 2, it only had 250,000 left and by then the Soviet Union had the most surviving Jews, which was 1.75 Million. Total of 1.1 Million Soviet Jews were killed during the Holocaust.
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Kill all jews
A star.