Western powers banning slavery lead to decline of muslim power?

Re: Western powers banning slavery lead to decline of muslim power?

Islam did not start slavery, it was already being practiced , Islam emphasized freeing slaves . Islam at least in Quran does not order the Muslims to go and start making people slaves on the contrary Quran has prescribed freeing slaves as penalty for many sins. I agree there is not a direct order for abolishment of slavery but these verses which prescribe this penalty indirectly abolish slavery.
Again based on many ahadees people try to justify keeping slaves.
Someone might quote verses from Quran in which it is allowed to have sexual relation with slave girls , that permission is for those who still had some slave girls in their possession. Quran did not permit or order the Muslims to go and take women in captivity so that they could satisfy their sexual urges.
This is how I see it , many will not see it that way and will differ with me , so be it.