Its genetic. Most of the population is lactose intolerant. Babies create a substance (lactase) that breaks down the lactose in mothers milk.
After eating normal food this ability usually goes away between the 4th and 6th year. However not for everyone, some people still make this lactase. Those people can eat/drink diary products without getting sick.
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.