That's like blaming Buddhism for slavery in Nepal, Bhutan and Tibet.
Islam wasn't responsible for slavery. Slavery was responsible for Islam being used to justify slavery.
Economic systems (feudalism, slavery or otherwise) are energy accumulation systems. They suck energy from people and things. And throughout history, energy technology has always preceded ideology. A civilization's codes and beliefs evolve to reverse rationalisatise how the civilization gets its energy.
Also, the first abolitionist movements were Islamic. For example the Druze, which sprang out of Shia Islam, advocated abolition and social equality. They viewed the Quaran as a sacred text and used its message of egalitarianism to justify both the abolition of slavery and more general social egalitarianism.
You find the same irony in Christianity. Christianity was used by the Western powers to justify slavery. The church also used Christianity to justify abolishing slavery in the Roman Empire, but they only did this to put in place even worse pro-slavery laws. And yet it was grassroots Christian abolitionist movements which helped end slavery in the West.
So things are not black and white.
Quote: The rest is history .. Slavery. genocide , plantocracy' , mercantilism . colonialism.
Would this have happened if the Islamic Ottoman Turks had not stopped this trade route?
Slavery exited long before Islam exited, in the Roman Empire, pre Roman empires, and even in the Middle East during pagan times.