I wish more people would talk about America's roll in abolishing slavery all over the world. I am not an apologist for slavery at all, I realize it was the worst chapter in American history, but it was also the worst chapter in world history, and we where the ones who put it to an end.
In 1776, the year America became a country, Pennsylvania became the first place in the world to abolish slavery. by 1802, 26 years after America's founding, that number rose to 10 (there where only 16 states at this time, as we all know the southern states would not abolish slavery) these 10 states where the only places in the world that had abolished slavery.
In Brittan the people saw what was going on in America and where inspired to outlaw slavery too, in 1833 Brittan wrote a law abolishing slavery and became the first nation, as a whole, to do so,
French slaves and peasants inspired by what was going on in America and Brittan revolted against the French aristocracy and won the French revolution, afterword's slavery is abolished, in 1848 France becomes the second nation, as a whole, to abolish slavery, neither Brittan nor France would have moved in this direction if not for what was going on in America
In America the people are fed up with the slave states in the south, they are inspired by and see a solution in what happened in Brittan and France, In Brittan they wrote a law, and I France they went to war, in America they decide to do both, write a law (the 13th Amendment) they know will take them to war. In 1865, 90 years after it's founding, America becomes the 3rd nation in the world to abolish slavery as a whole. but the story does not stop there
Between 1865 and 1948, no countries do anything but half measures, most of which are repealed over time, to abolish slavery,
In the Aftermath of WWII America conceives of and institutes the court of international law in 1948, America is backed up by Brittan and France in this effort. In the first set of laws laid out slavery is illegal worldwide, because of this law every country in the world has had to abolish slavery, the last one to do so was in 1981, today there is no place in the world that slavery is legal, and if a country does not enforce this law the international courts will,
So, yes slavery was a terrible chapter in American history, but America was also the most influential country in abolishing slavery worldwide, and they where the first country to abolish it anywhere