History 551 Politics and government 226 Social conditions 225 Social aspects 206 Foreign relations 156 Political aspects 155 Education 147 more ... Presidents 125 Race relations 122 African Americans 105 Government policy 102 Decision making 83 Management 78 Economic aspects 72 Economic conditions 66 Educational change 65 Military policy 64 Political leadership 62 Psychology 62 School improvement programs 59 Psychological aspects 57 Moral and ethical aspects 55 Education and state 53 Emigration and immigration 53 Prevention 53 Libraries 51 Evaluation 49 Murder 49 City planning 48 Women 48 less ...