History 13 Government policy 7 Social conditions 7 Social aspects 4 Women 4 Slavery 3 Cold War 2 more ... Collective memory 2 Economic aspects 2 Emigration and immigration 2 Foreign relations 2 International relations 2 Investments, Foreign 2 Mathematical models 2 Methodology 2 Middle class 2 Noncitizens 2 Political violence 2 Race relations 2 Racism 2 Regional planning 2 Sex role 2 Social service 2 Study and teaching 2 Abuse of 1 Abusive men 1 Administration 1 African Americans 1 African diaspora 1 African influences 1 less ...