I love quotes like this. 'We' ended slavery. I'm willing to bet you didn't do jack shit.White people did not create it, but we ENDED slavery.
Slavery started being abolished in China and India thousands of years ago. Rome passed laws to treat it's slaves in a more humane manner after the 3rd slave uprising. Dude named Spartacus. Various countries had started taking steps to eliminate slavery all together over the last few centuries.
In North America, the US and Brazil were among the last countries to abolish slavery. Mostly due to pressure from Great Britain and it's navy blocking slave ships from sailing.
Slavery still exists in the Gulf Arab states, and in the west, still exists through the trafficking of women for prostitution.