Causes Foreign relations -- 10 Politics and government -- 10 History -- 9 History 7 Iraq War, 2003 -- 6 September 11 Terrorist Attacks, 2001 -- 6 more ... World War, 1939-1945 -- 5 Nationalism -- 4 Diplomatic history 3 Ethnic relations 3 Yugoslav war, 1991 -- 3 Civil war, 1861-1865 -- 2 Cold War 2 Deception 2 Influence 2 Iraq War, 2003-2011 -- 2 Islam and politics -- 2 Persian Gulf War, 1991 -- 2 Political aspects 2 Anti-Americanism 1 Biography 1 Biography -- 1 Case studies 1 Civil War, 1955-1972 -- 1 Civil War, 1975 - -- 1 Civil War, 1983-2005 -- 1 Civil rights -- 1 Civil war, 1861-1865 1 Civil war, 1994-1996 -- 1 less ...