Self-determination was point 10 of Wilson's Fourteen Points. Wilson wanted to re-draw the frontiers of eastern Europe so that races ruled themselves. In some ways, self-determination was achieved.
Massive class inequality. Nobles and Clergymen were, in the French citizen's eyes, wasting money to fuel their lavish life style. They believed the 1% were living off the other 99% and they were right. France had a huge economic downfall after supporting the American Revolution so the citizens thought it unfair that the problem the government caused should be forced on them alone.
Charles L. Eidlitz was chosen I believe