Complex sentence: The Emirate was established by Muhammad ibn Ali al-Idrisi in rebellion against the Ottoman Empire, gained the support of Great Britain during the First World War, and flourished until the death of Sayyid Muhammad in 1920.
Split into simpler sentences: The Emirate was established by Muhammad ibn Ali al-Idrisi in rebellion against the Ottoman Empire. It gained the support of Great Britain during the First World War, and flourished until the death of Sayyid Muhammad in 1920.