In 1921, the population of multi-ethnic Czechoslovakia comprised 6.6 million Czechs, 3.2 million Germans, two million Slovaks, 0.7 million Hungarians, half a million Ruthenians (Rusyns), 300,000 Jews, and 100,000 Poles, as well as Gypsies, Croats and other ethnic groups.[1][2][3] German-speakers represented one-third of the population of the Bohemian lands, and about 23.4 percent of the population of the whole republic (13.6 million).[citation needed] The Sudetenland possessed huge chemical works and lignite mines, as well as textile, china, and glass factories. To the west, a triangle of historic ethnic German settlement surrounding the town Eger was the most active area for pan-German nationalism. The Upper Palatinate Forest, an area primarily populated by Germans, extended along the Bavarian frontier to the poor agricultural areas of southern Bohemia.