The Revolution of 1905-1907 in Russian-ruled Poland, with its dramatic manifestation of the transformation of the country’s political culture, marks a major, if not entirely appreciated, watershed in modern Polish history. Influenced, if not sparked by events in the central provinces of the Russian Empire, most notably Bloody Sunday, the revolution in Russian Poland quickly acquired a momentum of its own based on local conditions. In Poland the revolution was characterized by several nationwide general strikes and the sudden emergence of a viable labor movement; by a long, bitter, and partially successful boycott of the Russified school system; by unprecedented popular striving for the benefits of secular culture and education; by the gmina (communal) movement in the countryside that aroused a large part of the Polish peasantry from its traditional indifference to national issues; and by the rapid growth of political and social organizations that claimed to represent the interests of mass constituencies. Preceded by four decades of fundamental demographic, economic, and social change, the revolution propelled the largest and most significant part of Poland into a new era of broad, popular participation in the political, social, and cultural life of the country.