Are you in denial or really that uneducated about history and Islam? Here, be uneducated no more:
The Arab slave trade was the practice of slavery in West Asia, North Africa, East Africa, and certain parts of Europe (such as Sicily and Iberia) during their period of domination by Arab leaders. The trade mostly involved North and East Africans and Middle Eastern peoples (Arabs, Berbers, Persians, etc.). Also, the Arab slave trade was not limited to people of certain color, ethnicity, or religion. In the early days of the Islamic state—during the 8th and 9th centuries—most of the slaves were Slavic Eastern Europeans (called Saqaliba), people from surrounding Mediterranean areas, Persians, Turks, other neighbouring Middle Eastern peoples, peoples from the Caucasus Mountain regions (such as Georgia and Armenia) and parts of Central Asia (including Mamluks), Berbers, and various other peoples of varied origins as well as those of Black African origins. Later, toward the 18th and 19th centuries, slaves increasingly came from East Africa.
Some historians estimate that between 11 and 18 million black African slaves crossed the Red Sea, Indian Ocean, and Sahara Desert from 650 CE to 1900 CE, or more than the 9.4 to 14 million Africans brought to the Americas in the Atlantic slave trade…
The Ottoman wars in Europe and Tatar raids brought large numbers of Christian slaves into the Islamic world too. The ‘Oriental’ or ‘Arab’ slave trade is sometimes called the ‘Islamic’ slave trade, but a religious imperative was not the driver of the slavery, Patrick Manning, a professor of World History, states. However, since if a non-Muslim population refuses to adopt Islam or pay the Jizzya protection/ subjugation tax, that population is considered to be at war with the Muslim “ummah” and therefore it becomes legal under Islamic law to take slaves from that non-Muslim population…
Historians say the Arab slave trade began in the 7th century and lasted more than a millennium. Arab traders brought Africans across the Indian Ocean from present-day Kenya, Tanzania, Sudan, western Ethiopia and elsewhere in East Africa to present-day Iraq, Iran, Kuwait, Turkey and other parts of the Middle East [30] and South Asia (mainly Pakistan and India). Unlike the trans-Atlantic slave trade to the New World, Arabs supplied African slaves to the Muslim world…
Elikia M’bokolo, April 1998, Le Monde diplomatique. Quote: “The African continent was bled of its human resources via all possible routes. Across the Sahara, through the Red Sea, from the Indian Ocean ports and across the Atlantic. At least ten centuries of slavery for the benefit of the Muslim countries (from the ninth to the nineteenth).” He continues: "Four million slaves exported via the Red Sea, another four million through the Swahili ports of the Indian Ocean, perhaps as many as nine million along the trans-Saharan caravan route, and eleven to twenty million (depending on the author) across the Atlantic Ocean…
The Arab slave trade from East Africa is one of the oldest slave trades, predating the European transatlantic slave trade by hundreds of years.
Male slaves who were often made eunuchs were employed as servants, soldiers, or laborers by their owners, while female slaves, mostly from Africa, were long traded to the Middle Eastern countries and kingdoms by Arab and Oriental traders, some as concubines and others as servants. Arab, African, and Oriental traders were involved in the capture and transport of slaves northward across the Sahara desert and the Indian Ocean region into the Middle East, Persia, and the Indian subcontinent.
Arab slave trade - Wikipedia