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Movement towards the Black Sea

Beginning in the middle of the 2nd century, the Wielbark culture shifted southeast towards the Black Sea. During this time the Wielbark culture is believed to have ejected and partially absorbed peoples of the Przeworsk culture. This was part of a wider southward movement of eastern Germanic tribes, which was probably caused by massive population growth. As a result, other tribes were pushed towards the Roman Empire, contributing to the beginning of the Marcomannic Wars. By 200 AD, Wielbark Goths were probably being recruited into the Roman army.

According to Jordanes, the Goths entered Oium, part of Scythia, under the king Filimer, where they defeated the Spali. This migration account partly corresponds with the archaeological evidence. The name Spali may mean "the giants" in Slavic, and the Spali were thus probably not Slavs. In the early 3rd century AD, western Scythia was inhabited by the agricultural Zarubintsy culture and the nomadic Sarmatians. Prior to the Sarmatians, the area had been settled by the Bastarnae, who are believed to have carried out a migration similar to the Goths in the 3rd century BC. Peter Heather considers the Filimer story to be at least partially derived from Gothic oral tradition. The fact that the expanding Goths appear to have preserved their Gothic language during their migration suggests that their movement involved a fairly large number of people.

By the mid-3rd century AD, the Wielbark culture had contributed to the formation of the Chernyakhov culture in Scythia. This strikingly uniform culture came to stretch from the Danube in the west to the Don in the east. It is believed to have been dominated by the Goths and other Germanic groups such as the Heruli. It nevertheless also included Iranian, Dacian, Roman and probably Slavic elements as well.