Yellow is a lower belt level than green, so you can ask less questions as a yellow belt than when you are a green belt. I understand your confusion but on the page on belt they have not indicated how many questions a yellow belt can ask. A green belt can ask 10 questions.
A yellow tip can ask 3 questions while a green tip can ask 7 questions. Yellow is between the yellow tip and green tip and should be able to ask between 3 to 7 questions. From the way, the belt features are presented, I think that it is reasonable to assume that a yellow belt can only ask 3 questions.
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.