Answer:
Jews were leaving Europe in the years leading up to World War II for a variety of reasons, many of which were related to the rise of anti-Semitic sentiment and policies in several European countries.
One of the main reasons was persecution and discrimination against Jews, which had been increasing in Europe since the late 19th century. This discrimination took many forms, including legal restrictions on where Jews could live and work, as well as violent attacks and pogroms. As the Nazi Party rose to power in Germany in the 1930s, their anti-Semitic policies became increasingly aggressive, including the passing of the Nuremberg Laws in 1935 which stripped Jews of their citizenship and rights.
In addition, economic instability and poverty also played a role in Jewish emigration from Europe. The Great Depression had hit Europe hard, and many Jews were struggling to make a living. Some saw emigration as a way to escape poverty and find better opportunities elsewhere.
Finally, there were also some Jewish organizations that encouraged emigration as a way to protect Jews from persecution and discrimination. For example, the Zionist movement had been promoting the idea of a Jewish homeland in Palestine, and encouraged Jews to emigrate there as a way to escape anti-Semitism in Europe.
Overall, the reasons why Jews were leaving Europe before World War II were complex and varied, but they all reflected the difficult and dangerous situation that Jews faced in many European countries at that time.