Until the advent of materialism and 19th c. dogma, Western Civilisation was superior to anything Islam had developed. Islam has not aided in the development of the modern world; in fact civilisation has only been created in spite of Islam. Proof of this resides in the 'modern' world and the unending political-economic and spiritual poverty of Muslim states and regions. Squatting on richer civilisations is not 'progress'. Islam is pagan, totalitarian, and irrational.
Blacks, Muslims and Arabs were the great slave traders of Blacks. Some 50 million were enslaved. Whites were also enslaved en masse by the Muslims - some 25 millions over 1400 years.
Black slaves were treated far worse by Muslims than Whites in general as given by death rates and the mere fact that no Black culture exists within Arab countries or the emirates to which Blacks were sent.
The great Christian David Livingstone provided first hand proof of the barbarity of the Arab-Black slave trade still thriving in the mid to late 19th century. His journeys were undertaken to shine a light on this barbarism and end it.
Today some 5 million Blacks are still enslaved by Blacks and Muslims.