Foreign relations 8 Politics and government 5 History 3 Power (Social sciences) 2 Social conditions 2 World politics 2 Acid pollution of rivers, lakes, etc 1 Authoritarianism 1 Boundaries 1 Civilization 1 Communication 1 Communism 1 Crime 1 Democratization 1 Discontent 1 Economic conditions 1 Economic policy 1 Foreign economic relations 1 Geopolitics 1 Mineral industries 1 National security 1 Nationalism 1 Natural areas 1 Peaceful change (International relations) 1 Political aspects 1 Political participation 1 Politics and culture 1 Pollution 1 Relations 1 Reputation 1