History 255 African Americans 73 Politics and government 71 Race relations 55 Social conditions 31 Civil rights 18 Slavery 17 更多 ... Enslaved persons 16 Racism 16 Reconstruction (U.S. history, 1865-1877) 16 Social aspects 16 Social life and customs 14 Economic conditions 13 Political aspects 12 African American women 11 Legislators 11 Description and travel 9 Indians of North America 9 Manners and customs 9 Soldiers 9 Political activity 8 Political culture 8 Biography 7 Plantation life 7 Women 7 Campaigns 6 Civil rights movements 6 Civil rights workers 6 Governors 6 History, Military 6 少 ...