Causes 6 Foreign relations -- 6 Nationalism -- 6 Communism -- 4 Ethnic relations 4 History 4 Politics and government -- 4 more ... History -- 3 Yugoslav war, 1991 -- 3 Economic conditions -- 2 Geopolitics -- 2 Politics and government 2 Armed Forces -- 1 Atrocities 1 Banks and banking -- 1 Biography -- 1 Biography. -- 1 Citizen participation 1 Civil -- 1 Civil rights -- 1 Civilization -- 1 Civilization, Modern -- 1 Commerce 1 Communism 1 Communism and society 1 Conflict -- 1 Developing countries -- 1 Diplomatic history 1 Directories -- 1 Economic development -- 1 less ...