Influence September 11 Terrorist Attacks, 2001 -- Politics and government -- 2 Christianity and other religions -- 1 Foreign relations -- 1 Government policy -- 1 Imperialism 1 more ... Islam 1 Military policy 1 National characteristics, American 1 Philosophy 1 Political aspects 1 Political culture -- 1 Political messianism -- 1 Political science -- 1 Psychological aspects. -- 1 Radicalism -- 1 Terrorism -- 1 Voting -- 1 War on Terrorism, 2001- -- 1 War on Terrorism, 2001-2009 1 World politics -- 1 less ...