Outpouring from the Steppe
The dominant theme of the half millennium which began about the year 1000 [C.E.] was the outpouring of Turkish and Mongolian peoples from the Eurasian steppe. Infiltration or conquest by these barbarian nomads affected almost the entire civilized world. Only the poor and peripheral areas, scarcely worth the exertions of conquest, such as Japan or the medieval European west, escaped political dominion by steppe warriors. In geographical scope only the conquests of the bronze-working charioteers of the eighteenth to fifteenth centuries [B.C.E.] can compare with this ethnic inundation.