Upper Mesopotamia
Upper Mesopotamia constitutes the uplands and great outwash plain of northwestern Iraq, northeastern Syria and southeastern Turkey, in the northern Middle East. Since the early Muslim conquests of the mid-7th century, the region has been known by the traditional Arabic name of al-Jazira ( "the island", also transliterated Djazirah, Djezirah, Jazirah) and the Syriac variant Gāzartā or Gozarto (). The Euphrates and Tigris rivers transform Mesopotamia into almost an island, as they are joined together at the Shatt al-Arab in the Basra Governorate of Iraq, and their sources in eastern Turkey are in close proximity. The region extends south from the mountains of Anatolia, east from the hills on the left bank of the Euphrates river, west from the mountains on the right bank of the Tigris river and includes the Sinjar plain. It extends down the Tigris to Samarra and down the Euphrates to Hit, Iraq. The Khabur runs for over across the plain, from Turkey in the north, feeding into the Euphrates. The major settlements are Mosul, Deir ez-Zor, Raqqa, al-Hasakah, Diyarbakır and Qamishli. The western, Syrian part, is essentially contiguous with the Syrian al-Hasakah Governorate and is described as "Syria's breadbasket". The eastern, Iraqi part, includes and extends slightly beyond the Iraqi Nineveh Governorate. In the north it includes the Turkish provinces of Şanlıurfa, Mardin, and parts of Diyarbakır Province. Geography The name al-Jazira has been used since the 7th century AD by Islamic sources to refer to the northern section of Mesopotamia, while the Lower Mesopotamia, also known as Sawād, is the southern part of Mesopotamia. The name means "island", and at one time referred to the land between the two rivers, which in Syriac is Beth Nahrain (ܒܝܬ ܢܗܪ̈ܝܢ). Historically, the name could be restricted to the Sinjar plain coming down from the Sinjar Mountains, or expanded to embrace the entire plateau east of the coastal ranges. In pre-Abbasid times the western and eastern boundaries seem to have fluctuated, sometimes including what is now northern Syria to the west and Adiabene in the east. Al-Jazira is characterised as an outwash or alluvial plain, quite distinct from the Syrian Desert and lower-lying central Mesopotamia; however, the area includes eroded hills and incised streams. The region has several parts to it. In the northwest is one of the largest salt flats in the world, Sabkhat al-Jabbul. Further south, extending from Mosul to near Basra is a sandy desert not unlike the Empty Quarter. In the late 20th and early 21st centuries the region has been plagued by drought. History Prehistory Al-Jazirah is extremely important archeologically. This is the area where the earliest signs of agriculture and domestication of animals have been found, and thus the starting point leading to civilization and the modern world. Al-Jazirah includes the mountain Karaca Dağ in southern Turkey, where the closest relative to modern wheat still grows wild. At several sites (e.g. Hallan Çemi, Abu Hureyra, Mureybet) we can see a continuous occupation from a hunter-gathering lifestyle (based on hunting, and gathering