Advocates of the "Großdeutschland" (Greater Germany) solution sought to unite all the German-speaking people in Europe, under the leadership of the German Austrians from the Austrian Empire. Pan-Germanism was widespread among the revolutionaries of 1848, notably among Richard Wagner and the Brothers Grimm. Writers such as Friedrich List and Paul Anton Lagarde argued for German hegemony in Central and Eastern Europe, where German domination in some areas had begun as early as the 9th century AD with the Ostsiedlung, Germanic expansion into Slavic and Baltic lands. For the Pan-Germanists, this movement was seen as a Drang nach Osten, in which Germans would be naturally inclined to seek Lebensraum by moving eastwards to reunite with the German minorities there.