In short, there is NO Muslim civilization. It is only the claiming of the heritage the prior civilizations had as Islamic as it drives them down to the dust-bin of history.
Much scholarship was also done in their civilization by non-Arabs, including many Jews. Making it ironic that in the modern day they extol the bygone era yet they wish to expunge one of the sources of any claim to greatness of their civilization - that they adopted the learning and practices of older civilized people and allowed them a place in civil society as scholars and doctors and merchants - civilization.
The quote I provided was said as the Library at Alexandria burned.