Louis XVI is a French monarch who ruled the country from 1774 until 1792. He is known for his attempts at reforming the country, which ultimately failed and led to the French Revolution. There are several synonyms for Louis XVI, including Louis-Auguste, Louis-Auguste de France, and Louis Capet. Louis-Auguste was his birth name, while Louis Capet was a name given to him by revolutionaries after he was deposed and imprisoned. Louis-Auguste de France was also used to distinguish him from other French kings with the same name. His reign was marked by financial problems, political instability, and social unrest, which ultimately led to his downfall.