Throughout the later nineteenth century, profound social and economic forces operated on the Polish lands, giving them a more modern aspect and altering traditional patterns of life. Especially in Russian Poland and the Silesian regions under German control, mining and manufacturing commenced on a large scale. This development sped the process of urbanization, and the emergence of capitalism began to reduce the relative importance of the landed aristocracy in Polish society. A considerable segment of the peasantry abandoned the overburdened land. Millions of Poles emigrated to North America and other destinations, and millions more migrated to cities to form the new industrial labor force. These shifts stimulated fresh social tensions. Urban workers bore the full range of hardships associated with early capitalism, and the intensely nationalistic atmosphere of the day bred frictions between Poles and the other peoples remaining from the old heterogeneous Commonwealth of Two Nations. The movement of the former noble class into cities created a new urban professional class. Mirroring a trend visible throughout Central Europe, antisemitic sentiment mounted visibly, fed by Poles competing for the urban livelihoods long regarded as Jewish specialties.

These transformations changed the face of politics as well, giving rise to new parties and movements that would dominate the Polish landscape for the next century. The grievances of the lower classes led to the formation of peasant and socialist parties. Communism gained only a marginal following, but a more moderate socialist faction led by Józef Pilsudski (1867-1935) won broader support through its emphatic advocacy of Polish independence. By 1905 Pilsudski's party, the Polish Socialist Party, was the largest socialist party in the entire Russian Empire. The National Democracy of Roman Dmowski (1864-1939) became the leading vehicle of the right by espousing a doctrine that combined nationalism with mistrust of Jews and other minorities. By the turn of the century, Polish political life had emerged from the relative quiescence of Organic Work and entered a stage of renewed assertiveness. In particular, Pilsudski and Dmowski had initiated what would be long careers as the paramount figures in the civic affairs of Poland. After 1900 political activity was suppressed only in the Prussian sector.

Data as of October 1992