1) Extinct language of Europe 
The Drevani (Draväno-Polaben or Drevanen) were a tribe of Polabian Slavs settling on the Elbe river in the area of the present-day Lüchow-Dannenberg district of Lower Saxony, Germany. They were a constituent tribe of the Obodrite confederacy. In the course of the 9th century their territory was conquered by the Carolingian Empire and incorporate...