Ummm....Definitely not....The 14th and 15th amendments did. But it wasn't just African Americans....
The Normans were anti-slavery. Rather than enslaving prisoners, they worked out they could make a tidy profit from ransoming them. The Normans built all the Romanesque cathedrals in England.
Antietam is the bloodiest day in American history
Diaspora, (Greek: “Dispersion”) Hebrew Galut (Exile), the dispersion of Jews among the Gentiles after the Babylonian Exile or the aggregate of Jews or Jewish communities scattered “in exile” outside Palestine or present-day Israel. Although the term refers to the physical dispersal of Jews throughout the world, it also carries religious, philosophical, political, and eschatological connotations, inasmuch as the Jews perceive a special relationship between the land of Israel and themselves. Interpretations of this relationship range from the messianic hope of traditional Judaism for the eventual “ingathering of the exiles” to the view of Reform Judaism that the dispersal of the Jews was providentially arranged by God to foster pure monotheism throughout the world.
Success in trade always deals with advertisement. In this case, the spread of Islam help distribute it's teachings and beliefs making more people contribute to trade.