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The end of prehistory and the threshold of urban civilization are first seen in classic southern Mesopotamia about 4500 bce. The materials of the Ubaidian assemblage make their appearance after a still rather poorly delineated phase in the basal levels of the mound of Eridu. Whatever elements combined in the earliest amalgam (northern Iraqian, Susianan, or indigenous), the resultant traits of the Ubaidian tradition are revealed in their greatest clarity, consistency, and variety in southern Mesopotamia by 4000 bce.
There are mound accumulations and at least one large cemetery, which suggest a scale of communities well beyond that of the simple village. Buildings sufficiently large, formal in design and size, and monumental in concept and decoration to be judged as temples were present. Great quantities of painted pottery of high quality appear in the excavations. This pottery, by its very uniformity and the somewhat cursive nature of its decoration, may already have been the product of specialized craftsmen. Quantities of very highly fired clay tools (axes, adzes, sickles) have been found from Ubaidian contexts in southern Mesopotamia. These were useful for cutting the pithy woods, reeds, and grain of the southern alluvial environment or for dressing sun-baked bricks. The female clay figurines continued, but in a unique and highly characteristic stylization.
General cultural level of the Ubaidian Phase
A Ubaidian town supplied itself from fields of wheat and barley and its animal herds. The agricultural regime in the hot, dry alluvium of southern Mesopotamia depends, however, upon the utilization of the braided lower channels of the Tigris and especially of the Euphrates. Though elaborate irrigation works did not exist, the management of even quite informal ditches, with necessary shifts when the natural channels of the rivers shifted, added a new dimension to the sociopolitical necessities of Ubaidian culture. This system of irrigation may have been one of the factors that contributed to the expansion of society in late prehistoric Mesopotamia. Given the proper management and water, the yield of the rich alluvial soil was magnificent (until salinity became a problem several centuries later). There were also important dietary additions, such as dates from the groves of date palms and fish from the river channels and ditches.
With southern Mesopotamia as its focus, the Ubaidian tradition “exported” some of its elements at least as far as the Mediterranean coast and throughout the great upper drainage basin of the Tigris–Euphrates and Karkheh–Kārūn rivers. These exported traits doubtless reflect the growth of another oikoumenē, and one much more explicitly southern Mesopotamian in character. In southern Mesopotamia itself, the Ubaidian phase was followed (after a “Warkan” interval) by the so-called Protoliterate period, in which the usual criteria of civilization are manifest.
South and East Asia
It is known that village-farming communities existed in the Indus valley as early as 3000 bce, if not earlier. The original complexion of their assemblages resembled those of Iran (and perhaps those of the Ubaidian imprint on southwestern Iran), but this complexion gradually changed to something characteristic of the Indus valley itself and evidently culminated in the Harappan urban civilization. Some degree of contact between the cities of the Indus and of Mesopotamia certainly continued to exist, however. It is becoming evident that the Harappan complex was not restricted to the Indus valley alluvium but extended into the adjacent semitropical portions of India as well.
Knowledge of the developmental sequence in China is incomplete. Except for a few snatches of typologically simpler materials, the first evidence of food production in China appears to pertain to a well-advanced phase of the effective village-farming community level. This is the Yangshao complex, focused in the basin about the confluence of the Yellow River (Huang He) and the Fen River. Characterized by a handsome painted-pottery style, the Yangshao catalog also includes cultivated millet, rice, kaoliang (sorghum), and possibly soybeans, as well as domesticated pigs, cattle, sheep, dogs, chickens, and possibly the horse and silkworm. The village houses were built of tamped earth; there was a flourish of “ceremonial” pottery vessels and of elaborately worked objects in jade, as well as flint, bone, and ground-stone objects of daily use. The Yangshao phase is followed by that called Longshan, after which comes the Shang, or Yin, early dynastic complex of about 1500 bce. The date for the beginning of the Yangshao is unknown but is sometimes given as 5000–3000 bce.
Even less is known of southern China and southeastern Asia; the former seems to have been affected by the expansion of the makers of the Longshan black pottery and perhaps was also stimulated from the south. The rather amorphous Hoabinhian and Bacsonian sequence in Indochina, with ground-stone axes and adzes, appears to be quite late—perhaps of the 1st millennium bce. In Japan, on the other hand, the first appearance of pottery of early Jōmon type—the Jōmon period is tentatively dated from about 10,500 to about 300 bce, based on radiocarbon dating—was considerably earlier. Positive cultivation (wet rice) appears in Japan about only at the end of the Jōmon.
Robert J. Braidwood The Editors of Encyclopaedia BritannicaCentral Asia and Siberia
The Mesolithic–Neolithic era and the settlement of northern Siberia started in the 7th to 6th millennia bce—the period of climatic optimum in postglacial times, when forest conditions were introduced. Stratified sites in the Lake Baikal area show a long and gradual transition from the Paleolithic to the Neolithic stage. The postglacial culture in Siberia was a hunter-and-fisher culture (except in southern Siberia around the Aral Sea) with a microlithic flint industry in western and southern Siberia and with polished-stone tools, pointed- or round-based pottery, and bow and arrow, starting about the 4th millennium bce in almost all parts of Siberia.
The territories of this vast area are divisible into two blocks: (1) the southwestern, covering the area from the Caspian Sea to the upper Yenisey, extending over the zones of semidesert, steppe, and forest steppe, and (2) the eastern and northern, covering mountainous regions from Lake Baikal to the Pacific Ocean and the taiga (coniferous forest) and tundra belts of northern Siberia. The first is represented by peoples of European descent, the second by peoples of Asian descent. These two groups were in conflict until the latter overcame the former in several waves.