Causes History 211 Politics and government 93 Foreign relations 49 World War, 1939-1945 41 War 39 Political aspects 35 more ... World War, 1914-1918 30 Holocaust, Jewish (1939-1945) 26 Influence 24 Social aspects 20 Death 17 Historiography 17 Slavery 17 Ethnic relations 16 Iraq War, 2003-2011 16 Jews 16 Antislavery movements 15 Diplomatic history 14 Nationalism 14 Social conditions 13 Secession 12 Moral and ethical aspects 11 National socialism 11 Relations 10 Antisemitism 9 Economic aspects 9 Public opinion 9 Yugoslav War, 1991-1995 9 Genocide 8 less ...