It's not. Virtually ALL of the so-called contributions to civilization by muslims, were in fact invented by others.
Even the most ballyhooed “contribution”, algebra, was actually created by the Nestorian Christians whom the muslims conquered. The muslims exploited the inventions they acquired through conquest, but like any culture that fails to develop its own brainpower, eventually those “contributions” fell into disuse because they couldn't be understood/maintained/replicated by later generations.
Nestorian Christians, would you expand?
We have a family friend who refers to himself as Aserian Christian, and he really gets up set about these claims.
He says they developed the concept of zero, which without there would be no math and all that followed.
So I am unclear as to whether he is correct or not.
But either because I just had a gin and tonic, I don’t remember or went swimming that day so I just do not recall Nestorian Christians.