Jewish citizens were targeted because Adolf Hitler believed the Jews had too much stake in accumulating wealth throughout Europe. Hitler's intent was to stop Jewish Imperialism. Hitler often made demeaning and racially offensive comments about Jews to rally support for the eradication by Caucasian Germans.
Because in World War 2, Germans used them as Scapegoats, blaming everything on them.
They mean that Hitler blamed the Jews for Germany's problems, especially for the country's defeat in World War 1 and for the Great Depression.
The Jews migrated to Palestine after World War 2.
nowhere.
By ship
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.
world war 2
In World War 1 the Jews were not specifically targeted. Perhaps you are thinking of World War 2 and the Holocaust?
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.