 Complete the following phrase:  The Tervingi crossed the Danube into Roman territory after a clash with the Huns in 376. Some time later in Marcianopolis, the escort to their leader Fritigern was killed while meeting with Lupicinus. The Tervingi rebelled, and the Visigoths, a group derived either from the Tervingi or from a fusion of mainly Gothic groups, eventually invaded Italy and 