After the American Revolution, King Louis was going broke because of all the money spent on it. Because of this, he began to do to his citizens as the King of Englad had. America's ideas spread to France, and in 1789, six years after we had won our independence, they revolted. By 1791, King Louis and the royal family had been almost wiped out. This revolution was very radical- they got rid of the calender, religion, classes, titles, and many other things that make up French culture. They acted more violently against the King because he was much closer to his people. Part of the reason the King got into so much trouble was that to make changes so he could get out of debt, he had to call a meeting of all classes, as was protocol. He kicked the merchant class representatives when they were making too many demands, and they swore (on the King's tennis courts) that they wouldn't stop until they changed the government.
By 1792, France had declared war with all of Europe, and had requested the help of the United States, leading to the XYZ affair. Surprisingly, France actually began to win with Napoleon as its leader, but in 1799 they were defeated, and a distant nephew of the old king, Louis Phillipe, was made king because he was the only relative left.