Although many of us are familiar with the politics of the modern Middle East, I'm guessing most of us are not nearly as versed in its history. Today we'll try to rectify this a bit as we discuss the Abbasid Empire and their rulers, known as caliphs. To begin, the Abbasids ruled the Arab world from about 750 CE to 1258 CE. They took power after conquering the former empire of the Umayyads.
Mammals are a particular class of animal. What makes an animal a mammal are several things. First, they must have glands that give milk. This is to feed their babies. Second, they are warm-blooded. Third, all mammals have fur or hair. Humans are mammals and so are dogs, whales, elephants, and horses.
Mammals (class Mammalia /mÉËmeÉªli.É/ from Latin mamma breast) are any members of a clade of endothermic amniotes distinguished from reptiles and birds by the possession of hair, three middle ear bones, mammary glands, and a neocortex (a region of the brain).n an influential 1988 paper, Timothy Rowe defined Mammalia phylogenetically as the crown group mammals, the clade consisting of the most recent common ancestor of living monotremes (echidnas and platypuses) and therian mammals (marsupials and placentals) and all descendants of that ancestor.