Philosophy History 22 Civilization 18 Historiography 5 Nationalism 5 Politics and government 5 Foreign relations 4 more ... Intellectual life 4 Race relations 4 Relations 4 Social life and customs 4 Foreign public opinion 3 History and criticism 3 Social aspects 3 Social conditions 3 Social sciences 3 Acculturation 2 Citizenship 2 Cultural pluralism 2 Description and travel 2 Ecology 2 Ethnicity 2 Frontier thesis 2 Group identity 2 History, Local 2 Indigenous peoples 2 Influence 2 International relations 2 Land settlement 2 Latin American literature 2 less ...