Complex sentence: The Haitian Revolution (1791--1804) was a slave revolt in the French colony of Saint-Domingue, which culminated in the elimination of slavery there and the founding of the Republic of Haiti.
Split into simpler sentences: The Haitian Revolution (1791--1804) was a slave revolt in what was then the French colony of Saint-Domingue. It culminated in the elimination of slavery there and the founding of the Republic of Haiti.