Why people in USA are so focused in slavery in America and Atlantic slave trade and are in total ignorance about other slave trades. Atlantic slave trade existed between 1502 and 1853 and was neither longer, nor the biggest. Out of estimated 12 million slaves imported from Africa only 6.45% of them ended up in North America. Arab slave trade that started in 7th century was not finally over until around the 1960s and the estimated amount of slaves is much bigger in numbers. As recently as the 1950s, only in Saudi Arabia slave population was estimated at 450000 approximately 20% of the total population at that time. Slavs were subjects of slavery from roman times till relatively recently - 19th century. They were so systematically enslaved by Romans, Vikings, Mongols, Arabs, Tatars, Italian and Jewish merchants that even the word slave in modern english comes from the latin word for Slavic (people). During the reign of Abd-ar-Rahman III in muslim Umayyad Caliphate in nowadays Spain, there were 13750 slavic slaves in his capital city of Cordoba. Only Tatars from Crimea manage to enslave between 1441 and 1774 around 3 million slavs. Circassians woman were subjects of intensive sex slave trade in Ottoman Empire. It has been estimated that some 200000 woman were imported only between 1800 and 1900. As late as 1908, women slaves were still sold in the Ottoman Empire. In West African kingdom of Dahomey that existed from about 1600 until 1894 locals were so much in the slave business that the whole economy was built on slave labor and trade. They had an annual custom during which 500 slaves were sacrificed. In one of these ceremonies in 1727, as many as 4000 slaves were reported killed. The list can go on and on, but yet people in US think that slavery in USA was the worst thing on Earth related to slavery.