Because the British imposed taxes A.K.A. 'Acts' on the Americans due to huge debts from the F+I war... This made the Americans furious, and after events, such as the Boston Tea Party, the Americans started rebelling against the British Military occupying cities..... The British and Americans then fought the Revolutionary.... And it just goes on and on and on.
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.