The Abbasid Caliphate differed from others in that it did not have the same borders and extent as Islam. Particularly, in the west of the Caliphate, there were multiple smaller caliphates that existed in relative peace with them.
The major difference between the protist and the animal kingdom is protists are unicellular protozoans and unicellular & multicellular, but animals are multicellular animals.
Each Kingdom is either: 1  Prokaryote: their cells lack a nucleus and they are usually very simple organisms. 2  Archaebacteria and Eubacteria are Prokaryotes. 3  Eukaryote: their cells have a nucles. 4  Protists, Fungi, Plants and Animals are Eukaryotes.