HISTORY OF MESOPOTAMIA

Between the rivers: 4500-3100 BC

From about 4500 BC there are settlements on the edges of the marshes where the Tigris and the Euphrates reach the Persian Gulf. Mesopotamia, the region between these two rivers, will be the area of the world's first civilization - established a little earlier than 3100 BC. Unlike the other early river civilization of this region, that of Egypt (where a stable society is established along hundreds of miles of the Nile), Mesopotamia will be characterized by constant warfare and a succession of shifting empires. Towns here, unlike in Egypt, shelter within thick protective walls.
Sumer and Gilgamesh: 3100-2500 BC
Sumer, close to the mouths of the Tigris and the Euphrates, is where the first Mesopotamian towns develop. Each grows up round a local temple, which acts as the centre of the region's economic activity. The Sumerian temple priests, needing to keep accurate accounts, are the first people to develop a system of writing. The region can also claim other significant innovations. The first known potter's wheel, dating from around this period, has been found in Mesopotamia. And a Sumerian ruler, the semi-historical Gilgamesh, is hero of the world's earliest surviving work of literature, the Epic of Gilgamesh.
Gilgamesh is listed in later Sumerian records as the king of Uruk and builder of its great city wall. He may be largely legendary, but his city is real enough as an early centre of civilization. The wall, dating from a little after 3000 BC, is about six miles long. And it is from Uruk that the earliest written tablets survive. Uruk is soon eclipsed by a neighbouring city state - that of Ur, famous later for its great ziggurat and (in the Bible) as the home of Abraham. The discovery of The royal cemetery at Ur has revealed an astonishing level of sophistication in objects created in around 2500 BC for the local ruling family. But in about 2300 BC both Ur and Uruk yield to a conqueror from beyond Sumer.
Sargon and Akkad: c.2350 BC
The conqueror of Ur is a usurper, which is no doubt why he adopts the name Sargon - meaning the 'true king'. He is Semitic in origin, and tradition states that he begins life as a fruit grower. He gradually conquers the Sumerian cities - first Kish, then Uruk, then Ur - before founding a capital city of his own, Akkad. He then adopts a new title, 'King of the Nation'. His is the first Semitic dynasty in history, and his civil servants use a script which is an important innovation in the history of writing. Like the scribes of Ebla, whose archive has recently been discovered, they adapt the Sumerian cuneiform to meet the needs of a Semitic language. Writing systems will often, in later centuries, demonstrate a similar flexibility.
The exact location of Akkad, Sargon's capital, is unknown. Its remains lie hidden somewhere in the region where the Tigris and Euphrates come closest to each other. This is the natural place for a capital city (Babylon, Ctesiphon and Baghdad are later built in the same area). Sargon's achievement has been to establish the first Mesopotamian empire. There will be many more, but few of much greater extent. The Akkadian sphere of influence, either through direct conquest or effective control of trade, stretches at its peak from the Mediterranean coast of Syria to the head of the Persian Gulf. The empire of Sargon and his descendants lasts for some 150 years, before slowly disentegrating and being overrun by tribes from the north.
Babylon, Assyria and others: from 2200 BC
Over the next 1500 years or more, Mesopotamia goes through many periods of chaos, with small city states struggling for power or for survival. But there are also times of imperial stability, when centralized control is reestablished. The two centres, on which the greatest empires of the region are based, are Babylon and Assyria. There are also periods when much of Mesopotamia is controlled by powers outside the area, notably the Hittites from the 17th century. And eventually the independence of Mesopotamia is brought to an end by the Persians, who overwhelm Babylon in 539 BC.
Thereafter the region of the two rivers becomes, for the next 1000 years and more, a province within a succession of alien empires - those of the Persians, the Hellenistic Greeks, the Parthians, the Sassanians. It is admittedly a province of considerable importance. The first Hellenistic ruler, Seleucus, makes his capital on the west bank of the Tigris at the point where it comes closest to the Euphrates. From 129 BC a site on the opposite bank of the river is developed by the Parthians as Ctesiphon, a city subsequently much favoured by the Sassanian emperors. But it is not until the Muslim Abbasids are established in AD 750 a few miles upstream, at Baghdad, that Mesopotamia regains its full glory as an imperial centre.

Baghdad: 8th century AD

In their new city of Baghdad the Abbasid caliphs adopt the administrative system of the long-established Persian empire. Persian Muslims are as much involved in the life of this thriving place as Arab Muslims. Here Islam outgrows its Arab roots and becomes an international religion. Here the Arabic and early Persian languages coalesce to become, from the 10th century, what is now known as Persian - combining words from both sources and using the Arabic script. Here Mesopotamia briefly recovers its ancient status at the centre of one of the world's largest empires.

At no time is this more evident than in the reign of the best-known of the Abbasid caliphs, Harun al-Rashid.
The luxury and delight of Harun al-Rashid's Baghdad, in the late 8th century, has been impressed on the western mind by one of the most famous works of Arabic literature - the Thousand and One Nights. Some of the stories are of a later date, but there are details in them which certainly relate to this period when for the first time a Muslim court has the leisure and prosperity to indulge in traditional oriental splendour. The caliphate is now at its widest extent, with reasonable calm on most borders. The international fame of Harun himself can be judged by the emphasis of Charlemagne's biographers on the mutual esteem of these two contemporary potentates, who send each other Rich gifts.