Influence History 172 Politics and government 87 Social aspects 44 International relations 34 Social conditions 34 Foreign relations 33 more ... Presidents 32 African Americans 28 Political aspects 26 Political culture 24 Political and social views 23 Public opinion 22 Race relations 21 Civilization 18 National characteristics, American 18 Popular culture 15 September 11 Terrorist Attacks, 2001 15 Intellectual life 14 Philosophy 14 Civil rights 13 Memory 11 Statesmen 10 Discoveries in geography 9 Discovery and exploration 9 Historiography 9 History and criticism 9 Vietnam War, 1961-1975 9 Civil rights movements 8 Cold War 8 less ...