Causes Foreign relations World War, 1939-1945 31 History 26 Diplomatic relations 17 War 16 Politics and government 15 more ... Relations extérieures 15 Influence 12 Iraq War, 2003-2011 11 Diplomatic history 10 Political aspects 9 World War, 1914-1918 7 Außenpolitik 6 Guerre mondiale, 1939-1945 6 Pearl Harbor (Hawaii), Attack on, 1941 6 Political and social views 6 Territorial expansion 6 War on Terrorism, 2001-2009 6 September 11 Terrorist Attacks, 2001 5 Histoire 4 History, Military 4 History, Naval 4 Politique et gouvernement 4 Vietnam War, 1961-1975 4 World politics 4 Influence (Literary, artistic, etc.) 3 Mexican War, 1846-1848 3 Military policy 3 National security 3 less ...