If we vote to make laws,then why aren't we allowed to vote on wars,NASA spending, who is working for who?

There are numerous categories of employee at NASA. For the Federal Employee jobs, preference is given to Veterans of US Armed Forces and citizens. It is extremely rare that a non-citizen would get such a job.

There are many non-citizens who officially work for contractors to NASA and work side-by-side with Federal employees. There are many employees of space programs of other nations whose assigned work station is at a NASA site. Also, some astronauts are naturalized US Citizens.

Only US citizens can work on national secrets, like nuclear weaponry. As far as Nasa, that would depend on what the actual job in question entailed. Just to get to the ISS, I would think anybody qualified is welcome.

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.