What two factors led to the beginning of World War II in Europe? various independence movements in Serbia against Austria-Hungary the rise of aggressive nationalism among some of the nations defeated in World War I the rise of communism in Soviet Russia, which was seen as a threat by many European nations rising competition among European powers for colonies and trading posts in Africa and Asia

The rise of aggressive nationalism among some of the nations defeated in World War I.

The rise of communism in Soviet Russia, which was seen as a threat by many European nations.

Explanation:

These are the two factors that led to the beginning of World War II. In the years before World War II, communism gained acceptance in Soviet Russia, and this new ideology was seen as a threat by many European nations. Moreover, nationalism also became popular among many countries, and this led to the development of more aggressive and extreme fascist governments.

japan desperate for their terriotory expansion ... and versallies palace treaty (which was quite unfair for german) can be added as two reason for cause of world war 2