Which factor had the most significant impact on the success of the Haitian Revolution?

The economic instability of the French Empire during that period.
External support from other enslaved populations in the Caribbean.
International pressure on France to grant independence.
The influence of Enlightenment ideas on the rebel leaders.

The influence of Enlightenment ideas on the rebel leaders had the most significant impact on the success of the Haitian Revolution. These ideas of liberty, equality, and fraternity inspired the enslaved population in Haiti to fight for their freedom and fueled their determination to break free from the oppressive colonial rule. The rebel leaders, such as Toussaint L'Ouverture and Jean-Jacques Dessalines, were able to rally their forces and effectively strategize their resistance based on these Enlightenment principles. Ultimately, it was this ideological motivation that played a crucial role in the successful outcome of the revolution.