History -- 25 Foreign relations -- 17 History 15 Politics and government -- 13 Biography -- 12 Juvenile literature -- 7 Presidents -- 7 more ... Race relations 7 Civilization -- 6 Relations -- 6 Legislators -- 4 Minorities -- 4 World politics -- 4 Campaigns -- 3 Chronology 3 Civilization 3 Histor -- 3 Indians of North America -- 3 Politics and government 3 United States -- 3 Asian Americans 2 Biograp -- 2 Biograph -- 2 Chronology. -- 2 Cultural assimilation 2 Dictionaries 2 Economic conditions 2 Ethnic relations 2 Ethnicity -- 2 General -- 2 less ...