Foreign relations 3,050 History 1,688 International relations 1,033 Politics and government 1,005 Race relations 851 International economic relations 608 Ethnic relations 569 Relations 489 Foreign economic relations 436 Industrial relations 418 World politics 390 Social conditions 345 Interpersonal relations 331 Political aspects 287 Social aspects 259 Economic conditions 238 Public relations 221 Globalization 213 Racism 210 Philosophy 187 World War, 1939-1945 171 Jews 162 African Americans 157 Economic policy 146 National security 142 Security, International 140 Cold War 135 Imperialism 131 Nationalism 128 Military policy 124