Politics and government -- 40 Foreign relations -- 31 Biography -- 25 History -- 19 Presidents -- 15 Biography 10 History 8 more ... Legislators -- 7 Politics and government 7 Vietnamese Conflict -- 7 Relations -- 6 Vietnamese Conflict, 1961-1975 -- 6 World War, 1939-1945 -- 6 Government policy -- 5 Political corruption -- 5 Statesmen -- 5 Terrorism -- 5 Political aspects -- 4 War on terrorism, 2001- 4 World politics -- 4 Decision making -- 3 Influence 3 Philosophy 3 Political culture -- 3 Social aspects -- 3 Social conditions -- 3 World War -- 3 Aerial operations, American 2 African American legislators 2 Cabinet officers -- 2 less ...