They are germany, italy and japan.
Some push factors were the chance to get rich, Dry farming, owning land, escaping the nightmares of the south ( slaves ). There were also longhorns to sell. Some pull factors were relatives and spouses not wanting them to go.
It warned Roosevelt that Germany was developing an atomic bomb and encouraged him to start a nuclear program in the US that later became the Manhattan Project
Answer:
I agree with Plato's critique of democracy because...
then you have to finish that, there's not a lot or any background information but I'm always happy to help if you add more!!!! lmk how you do!!!