Western Civilisation was and is superior to anything Islam has developed. Islam has not aided in the development of the modern world; in fact civilisation has only been created in spite of Islam. Raising the alarm about the fascism called Submission since 2000.
Slavery is sanctioned within Muhammadan codes. Both the Koran and Hadith make slavery a fact of life and both are littered with references to slaves and both use extensive language to describe slaves. Islam is history's greatest slave trading cult ever created. In 1400 years Moslems have slave traded or killed in the process of slave trading at least 100 million Blacks; 75-100 million Whites; and some 150 million Hindus and Buddhists. The cult of Muhammad has enslaved or killed in the process of enslavement 300-400 million people. Yet no one discusses this.
The entire Atlantic Black slave trade; in which some 10-11 million Blacks were carried across the Atlantic over 300 years, with 90% arriving in the Caribbean, or South America; was brokered by Moslem-Arab slave masters. Moslems had controlled the African slave trade from West to East, for well over 800 years when caravels from Portugal alighted along the West African coast in the late 15th century. A fact lost on modern academics and media experts. No one discusses that the White slave traded was brokered by Black and Arab slave wholesalers.
Slavery still exists in Islam today. In 1963 Sudan adopted full Sharia Law. Since then the country's Christian and animist population has been attacked, killed, enslaved and embattled. South Sudan separated largely due to the Moslem Jihad. Few in the academic or media circles call the Sudanese Jihad for what it is – a modern expression of Moslem supremacism and war, in part to satisfy the Koranic-Muhammadan lust for slaves, both for sex and work. 4 million non-Moslems in the Sudan have been killed, enslaved or in some cases converted by force [usually starvation] to the Meccan moon cult. I can't recall one single media mention of 'Islam' in connection with the Sudan.
East Africa is little better. Slavery still goes on in East Africa, namely the enslavement of Christians or non-Moslems. All of East Africa is roiled by Jihad, part of this vicious barbarism is the choice given to non-Moslems. Convert or die. We see similar occurrences in Iraq and Syria.
Within Islamic liturgy a Moslem can never be a slave. But Christians and non-Moslems can and should be. Sex-slavery as practised by Muhammad, is a profound part of Islam. Muhammad had anywhere ['scholars' are in dispute], from 4-9 wives and 5-15 sex slaves. When your founder, who is portrayed as the perfect man, is trading sex slaves, selling slaves taken in Jihad to further fund war [many Hadith discuss this]; and keeping a sex harem for himself, then obviously the cult will accept slavery of non-Moslems as not only natural, but necessary.
The Ottomans denuded half of central Europe's population during the 16th and 17th centuries. Half. Some 10 millions lived in central Europe athwart the Moslem-Ottoman Jihad. Vienna was threatened in 1529 and 1683. In over 200 years it is estimated that 3-5 million central Europeans were enslaved or killed by the Moslem cult. Especially coveted were young boys who were pressed into service as Moslem warriors after being forcibly converted to Islam – the Janissaries as they were called. Young White women sold as sex chattel fetched 4 times the price of an average Black slave. Millions more were taken from the Ukraine, Russia, Georgia [Circassia] and Armenia.
Yet nary a word about Moslem slave-owning and trading. Not even a whisper about it. The Moslems shipped at least 11-15 million Blacks north and some 10 million West. To get 25 million Blacks to the slave market would mean culling a total population of some 100 million into slavery, with 65-80% dying before reaching the market. Most estimates state that for every man or woman who made it alive to be traded as a slave, 4 to 5 would have died en route. Some studies suggest 10-15 might die for every one who makes it to the slave trade. We can estimate a similar death rate for Whites. In this vein Islam as the slave-fascism uber alles took some 200 million Blacks and Whites into slavery.
But you won't hear a word from Church leaders, the academics or the media about this. Because everything is so 'nuanced'.