Why did Spanish and British forces get involved in the Haiti Revolution?

Spanish and British forces became involved in the Haitian Revolution primarily due to their interests in the Caribbean and the potential threat posed by a successful slave uprising to their own slave colonies. Spain sought to reclaim control over its territory in Saint-Domingue, while Britain aimed to expand its influence and prevent the spread of revolutionary ideas to its colonies. Both nations were also concerned about the economic ramifications of a free Haiti on their sugar trade and colonial stability. Ultimately, their interventions were driven by a mix of geopolitical strategy and economic interests.