1) I believe the answer is “they feared the king’s soldiers would march on them,” even though I was taught that they invaded it for gunpowder and etc.
2) It marked the end of over 1000 years of monarchy in France.
3) The French ended slavery.
4) His invasion of Russia (a really bad defeat on his part).
5) The monarchies were re-established (Louis XVIII).
(i’m just not really sure about #1, though)