Laubach lay on the "Route de deuxième classe Paris-Trier-Koblenz". During the French Revolution, French settlers came to Laubach and the surrounding area; this is evidenced by local surnames such as Bourgeois (later Germanized to Buschwa), Gorges, Lefev, Regnier and Gilles. French words entered local speech, some of which can still be heard. When Europe was divided among the great powers at the Congress of Vienna in 1815, the Rhineland became Prussian. Prussian rule brought the impoverished Eifel region economic improvements in health care, roads, schools, churches, industry and handicrafts (although the focus was still on agriculture). By 1832 Laubach's population had risen to 270, and by 1872 to 345.