A civilization state differs from a nation state in that it is much larger, with a longer history, and is not composed of a monolithic or single national ethnic group, language, culture, or religion. Such civilization states that exist in the 21st century are China, India (composed of the majority Hindu culture), and the Russian Federation.
While the Islamic world consists of many ethnic groups, languages, cultures, common religion with a long history, it has and several competing nation states for Islamic hegemony, such as Egypt, Iran, Turkey, Pakistan, and Indonesia. The Islamic civilization lacks political unity. It was formerly governed by a Caliphate up until 1924 under the Ottoman Empire.