Nazism became popular in Germany by 1930 because:(i) Threat of communism was a contributing factor in the rise of popularity of Nazism. Though the Sparta cist uprising designed on the Bolshevik Revolution in Russia was crushed, Nazis played the card of rising menance of communism to win the support of the conservative forces.(ii) Failure of communist party and the socialist party to put up a united front also contributed to the popularity of Nazism.(iii) Hitler's personality played an important role. He was a good orator and his words inspired cross-section of people to support him. The working class because he promised employment and security and the propertied class because he promised to make Germany great again.

Another reason was the fragile nature of democracy,and the failure of Weimar republic in Germany due to which popular support grew for dictatorship.