It was a global institution as well, many Americans seem to have the impression this was the only country with slavery/ it was also not the last to have it. There were French or British possessions that had slavery right up to the end of the century.
Untrue. Slavery was abolished throughout the British Empire in 1834 and the French Empire in 1848.
The last two "European" territories to abolish slavery were Cuba in 1886 and Brazil in 1888.