The two factors that significantly contributed to the Nazis' rise to power in Germany before World War II are:
B. Germany experienced economic disaster after the end of World War I.
D. Many Germans believed Nazi propaganda about the threat of the Jewish people.
The economic instability, particularly due to hyperinflation and the Great Depression, created a favorable environment for the Nazis. Additionally, the party's propaganda effectively played on existing anti-Semitic sentiments, which helped them gain support among the populace.