Jewish secularism refers to secularism in a particularly Jewish context, denoting the definition of Jewishness without recourse to religion. Jewish Secularist ideologies first arose in the latter third of the 19th century, and reached the apogee of their influence in the interwar period.
World War II in Europe began with Germany's invasion of Poland on September 1, 1939. Therefore, the answer is C) Germany's invasion of Poland. Hope this helps!
