Why do foreigners move to the USA knowing immigrants usually live under hard circumstances?

It's very difficult if not impossible. Bachelor of Computer Science degrees are fairly common here in America and there doesn't seem to be a shortage of workers in that area, so getting an employer to ask for a visa for you is very unlikely. Best I can offer -- become very successful in the area.

Become known for something -- visuals in online games, for example. Then, if you're lucky, your employer and/or product will be bought by a large American or European firm and, as part of the deal, you'll go to work for them where ever they need you.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.