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 differ from other vertebrates such as reptiles, birds and amphibians in that they have a single lower jaw bone that attaches directly to the skull. This bone is referred to as the dentary, due to the fact that it holds the teeth of the lower jaw.air is one of the characteristics of a mammal that is unique to mammalsâno other animals have true hair and all mammals have hair covering at least part of their body at some time during their life.