In my humble opinion, it was hunger. Hunger led to the "popular uprising. " Marie Antoinette had a hearty appetite for jewels and gambling and she had little real knowledge of the people she and her husband ruled.
Taxation of the poor working class led to further and further desolation. The people were taxed to support the nobility who supported the King and Queen. Remember-these rulers honestly thought they were given the right to rule by God.So who would question a person that was deemed to be God given?
For the fearful, uneducated, superstitious peasant it would be next to being blasphemous to not give to the Royalty. So-it was whether to save your soul or starve.In the end, starvation won the war against those who might or might not be next to God.
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.