Causes History 1,348 Politics and government 581 Foreign relations 240 World War, 1914-1918 215 World War, 1939-1945 197 Colonies 188 more ... War 82 Death 79 Influence 79 Holocaust, Jewish (1939-1945) 76 Political aspects 73 Diplomatic history 63 Slavery 62 Mortality 54 Iraq War, 2003-2011 48 Ethnic relations 46 Social aspects 41 Social conditions 40 Historiography 39 Antisemitism 38 World politics 38 Administration 36 Jews 36 Antislavery movements 34 Relations 33 Economic aspects 31 Secession 31 Nationalism 29 Boston Massacre, 1770 27 less ...