Prior to the first century, the vast lands of southern Russia were home to scattered tribes, such as Proto-Indo-Europeans and Scythians. Between the third and sixth centuries, the steppes were overwhelmed by successive waves of nomadic invasions,led by warlike tribes which would often move on to Europe, as was the case with Huns and Turkish Avars.During the period from fifth century BC to seventh century human settlements are represented by Dyakovo culture of Iron Age which occupies the significant part of the Upper Volga, Valday and Oka River area. Dyakovo culture was formed by Finno-Ugric peoples, ancestors of Merya, Muromian, Meshchera, Veps tribes. All regional Funno-Ugric toponymy and hydronym names go back to those languages, for example Yauza River which is a confluent of the Moskva River, and probably the Moskva River itself too.
