I read a collection of Hitler's speaches. He was a huge fan of the US and emulated a number things; Monroe Doctrine was the source of his Sphere of Influence idea, Manifest Destiny and Living Space In the East, slavery and slavery.

Apparently the Nuremburg laws were copied from Alabama state laws. The laws on eugenics were provided by the New York based Eugenics Society.

Meanwhile concentration camps in German were inspired by the British concentration camps used during the Boer Wars