Congresses -- History -- Campaigns -- 1 Congresses 1 Economic conditions -- 1 Economic policy -- 1 Ethnic conflict -- 1 more ... Ethnic relations -- 1 Industrial organization -- 1 Labor market -- 1 Nationalism -- 1 Political violence -- 1 Politics and government -- 1 Regional development -- 1 Social conditions -- 1 Social policy -- 1 Violence -- 1 World War,1939-1945 -- 1 less ...