system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why was the United States the only country unable to end slavery without a civil war?
gpt
It wasn't. Haiti is the result of a successful slave revolt against the French. Many nations in Latin America began ending slavery during their fight against Spain, to rally some support for rebel leaders and then the Creole elites. In the states there that kept slavery, like Brazil, there were numerous slave revolts. The British Navy fought to end the international slave trade, making the plantation business in those states that maintained slavery less economical, and some of those it fought were British slave traders operating illegally.