Causes History 822 Politics and government 350 War 225 Foreign relations 184 World War, 1914-1918 181 World War, 1939-1945 142 more ... International relations 131 Holocaust, Jewish (1939-1945) 92 Influence 68 Political aspects 67 Diplomatic history 55 Slavery 54 Social aspects 42 Social conditions 42 Jews 40 Ethnic relations 39 Antislavery movements 38 Historiography 38 World politics 38 Antisemitism 36 Colonies 36 Secession 32 Diplomatic relations 30 Intellectual life 30 National socialism 29 Iraq War, 2003-2011 28 Nationalism 28 Moral and ethical aspects 24 Relations 23 less ...