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.
The main difference between republic and democracy is that republic. Republic. A republic is s form of government system in which power rests with the elected individuals representation the citizen body and exercise the power as per rule of law of the country. It is the type of government that excludes a monarch.