Arabic is a name for what are traditionally considered the descendants of the Classical Arabic language of the 6th century. This includes both the literary language and varieties of Arabic spoken in a wide arc of territory, stretching across the Middle East, North Africa, and the Horn of Africa. Arabic belongs to the Afro-Asiatic family. The literary language is called Modern Standard Arabic or Literary Arabic, which is a pluricentric, fusional language. It is currently the only official form of Arabic, used in most written documents as well as in formal spoken occasions, such as lectures and news broadcasts. However, this varies from one country to the other. This volume contains the third of three books of a comprehensive introduction to the language developed by the US Foreign Service Institute to help diplomats learn the language.