Prior to 1951, what major even happened that contributed to the spike in the national debt? I NEED THIS ASAP!!!

7 answers

Who paid for wWII?
Hmmm....I don't think it was us
^ the US
So did the cost of the war increase the national debt?
I don't know. That's my problem.
http://www.ritholtz.com/blog/wp-content/uploads/2010/05/National-Debt-GDP-L.gif

See the spike 1940-1945? So what happened then.
1939- 1945 was WW2... so yes, it probably was WW2. Do you know of any other events?