Germania Slavica

Germania Slavica is a historiographic term used since the 1950s to denote the landscape of the medieval language border (roughly east of the Elbe-Saale line) zone between Germanic people and Slavs in Central Europe on the one hand and a 20th-century scientific working group to research the conditions in that area during the Early Middle Ages and High Middle Ages on the other.

The Germania Slavica was introduced by Wolfgang H. Fritze as a research term in the mediaeval terminology when his interdisciplinary working group (IAG) was founded in 1976.

The Germania Romana designated, according to Frings, the spaces "in which German language development [...] has been determined by the influence of Roman substrates", essentially the areas west of the Rhine and Neckar and south of the Altmühl and the Danube (Limes).

With regard to the eastern extent, Polish research has put the counter-term Slavia Germanica up for discussion, so that there are gears[clarification needed] in the Pomeranian, Lusatian and Silesian regions.

Germania Slavica 1 has recently been converted into a “northern” (Mecklenburg-Western Pomerania and Brandenburg) and a "southern" (Saxony) divided.