>>17938767
>Brought stability and progress.
No it didn't. The only thing these muslim "scholars" during this time did was copy some ancient works that were found in the cities that they stole and took over (they can't build anything themselves), although they destroyed other works, which is part of the reason why there are so many lost works of antiquity.

Inbreeding is incredibly dysgenic. Mohammadanism brought inbreeding into the areas it infested. Inbreeding objectively causes lowered IQ. Yet inbreeding is what Mohammad taught. So lower IQ and inbreeding are both associated to Mohammadanism. Many of them are basically like children, mentally speaking, part of which is due to all of the inbreeding that has happened. The depraved culture which incentivizes dishonesty (i.e. Taqiyya) also has a further negative effect.