Americans History 163 Relations 43 Social life and customs 31 Travel 26 Foreign relations 23 History and criticism 23 more ... Authors, American 22 Civilization 20 Description and travel 20 Intellectual life 20 Attitudes 18 Public opinion 18 Emigration and immigration 16 Politics and government 16 Social conditions 15 American literature 13 World War, 1939-1945 12 Armed Forces 11 Foreign public opinion, American 11 In literature 11 Journalists 11 Travelers' writings, American 11 Tourism 10 Social aspects 9 American influences 8 Cold War 8 Artists 7 Commerce 7 Families 7 less ...