How did hitler's ideas about germans being racially superior lead to the beginning of world war ii?

The philosophy of the Nazi  Party was based on eugenics, Nordic superiority and the notion that Aryans were a Master race. These ideas were used to justify the extermination of so-called inferior groups. It led to the Holocaust and WWII.

Explanation: Eugenics and racism were at the center of the NAzi project in Europe during WWII.

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.

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