Final answer:
The Great Depression, unhappiness with Weimar democracy, fear of communism, the appeal of Hitler, and Nazi party structure and methods all contributed to the increasing popularity of the Nazis in Germany.
Step-by-step explanation:
The Great Depression played a significant role in increasing the popularity of the Nazis in Germany. The economic crisis left millions of Germans unemployed and desperate for change, which the Nazis capitalized on by promising to restore Germany's economy. Additionally, dissatisfaction with the Weimar democracy and fear of communism fueled support for the Nazi party. Hitler's charismatic appeal and the effective propaganda strategies employed by the Nazis also helped them gain popularity. The organized structure and aggressive methods of the Nazi party further contributed to their rise to power.