They certainly don't all look like that - you must be looking at different pictures of them from me. Throughout history, people at all levels have married cousins. It's inevitable if you think about it - in the days when most people never travelled far as the only transport available was walking or horses, they tended to stay put and end up marrying their relatives as they were the only people around.
Royal families do not inbreed enough to cause anything like that except in rare cases. Possibly the worst example there has ever been was Charles II of Spain. That Habsburg dynasty of Spain intermarried a lot to "keep the royal blood pure".
ALL of his ancestors going back for five (or six or seven, depending on which line you count) generations were descended from Philip I and Joanna the Mad of Castile, and in a lot of cases uncles married their nieces, giving the family tree an extremely strange shape - and making it hard to count the generations. It has been calculated that his ... more.
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.