Aside from using the wrong style for loop you're trying to make a function in a loop . This is a very common mistake. Since JS has function-level scoping, not block level, this doesn't work as you might expect.
It seems to work fine, I see a map with 3 markers but without knowing what the problem is it's hard to tell.
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.