The taxpayers got hosed by being dragged into two wars, pushed by the House of Morgan and the rest of the central bankers. Nothing causes spending like war. The citizens and middle class get wiped out and get in hock up to their eyes with war debt, the bankers end up with all the money.
FOLLOW THE MONEY. If you think we went to war because of the evil Germans in WW1 you have NO IDEA what was happening.