History 31 Social conditions 9 Social aspects 7 Race relations 6 Economic conditions 4 Politics and government 4 African Americans 3 more ... Economic history 3 Indians of North America 3 Social life and customs 3 Cultural assimilation 2 Ethnic relations 2 Immigrants 2 Iron and steel workers 2 Manners and customs 2 Minorities 2 Natural history 2 Political aspects 2 Poor women 2 Working class 2 African American jazz musicians 1 African American women 1 Agriculture 1 Air 1 Alcoholic beverages 1 Americans 1 Amish 1 Amish women 1 Anthracite Coal Strike, Pa., 1897 1 Anthracite coal mines and mining 1 less ...