The arabs started a slave trade of Afrikans 1000 years before the europeans did, which means they were slave traders BEFORE islam came into existence. The arab slave traders taught europeans how to trade slaves. The arabs, in all of their history, have been misogynistic womanizers and prejudice toward Afrikans.
The rise of islam was a result of the destruction of North Afrika under euro-centric christianity by use of the roman empire. The Afrikans saw Islam as a way to get the romans off of their hides. Little did they know the arabs would not only replace them as oppressors, but they would be even more ruthless.
When the islamic arabs rose to power, they purposely prevented the Afrikans they ruled over from becoming muslims. The quran states that a muslim cannot enslave another muslim, so they couldn't enslave any Afrikan muslims. They instead encouraged the Afrikan Kings they traded with to convert to Islam and to sell them the Afrikans that refused to be converted. The famed king #MansaMusa reached the status of being "the richest man in history" off of the arab slave trade. Many Afrikan muslims took there christian servants with them on their hajj, to be sold as slaves.
Unlike the United States, in other countries in the world, if you are mixed with Afrikans and another race, you are considered NOT to be Afrikan. This system has been used by foreigners since ancient times as a way to use mulattoes as agents against Afrika. It was common practice for invaders to rape Afrikan women and impregnate them, and then teach th child their mother was inferior, as all European and Asian cultures deem women.
The Afrikans and arabs mulattos, known as moors, and the arabs from mauritania and morocco, went into South West europe in 711, and conquered, ruled, and educated the europeans. The moors themselves trace their ancestry to the hassaniya arabs of yemen. Although the hassaniya have had a major influence on the moors, the moors are probably more Berber and Afrikan than they are arab. With the knowledge they received from the moors, they went and educated the rest of europe and brought them out of what was known as the Dark Ages.