Dacia was a kingdom created by Burebistas in northern Danube region. Kingdom weakened after Burebistas' death, reunited under Decebalus. Trajan's wars (101-106 CE) destroyed Dacian kingdom. Dacia Traiana became Roman province until 271 CE. After 275 CE, region was overrun by Goths, Huns, and Avars
Tiele were Turkic tribal confederation living north of China and Central Asia. First mentioned in Chinese records as Chile or Gaoche in 357-363. According to legend, Tiele descended from Xiongnu through a wolf-guarded platform. By 402, Shelun conquered most Gaoche tribes and established Rouran Kaghanate
Haplogroup H split from HIJK 48,500 years ago. H1a1d2 found in Bronze Age (3200-1900 BCE) in Iran and Turkmenistan. H2 first appeared in Pre-Pottery Neolithic B culture (10,800-8,500 years ago). H2 likely entered Europe during Neolithic with agriculture spread
Visigoths were Germanic people united under Roman rule in late antiquity. First appeared in Balkans as Roman-allied barbarian under Alaric I. Defeated Romans at Battle of Adrianople in 378. Settled in southern Gaul as foederati to Romans in 418