While the Haitian Revolution was not the only one of its day, it was the only revolution in modern history, and perhaps all of world history, where the revolutionary population was comprised almost entirely of slaves who successfully ousted their former masters to form an entirely new society.
As the revolutionaries in Haiti were mostly slaves, the successful overthrow of their French rulers affected a complete reordering of society. As stated by Trinity College, “socially, the lowest order of society, the slaves, became free and equal to the dominating order of society, the whites.” Thus the uniqueness of Haiti's revolution lies not only in the total reversal of caste or class circumstances, but also in the new racial order that evolved thereafter.
Taking a page from French nationalism during the Napoleonic era, the Haitian revolutionaries also identified themselves with the idea of nation, though they also considered their nationality to be partly premised on a multiracial Haiti. This was the first time in modern history that such a notion of nation was implemented.
Unsurprisingly, the Haitian Revolution was extremely influential. For other slave-holding societies, it came as a dire warning of a possible future. For people of color around the world, the revolution suggested that they might too achieve independence and attempt to build an egalitarian society of their own.