Politics and government 9 History 8 Civil rights 3 Environmental policy 3 Foreign relations 3 Citizenship 2 Communication in politics 2 Internal security 2 Political aspects 2 Social aspects 2 Social policy 2 Socialism 2 State-sponsored terrorism 2 Technological innovations 2 Vietnamese Conflict, 1961-1975 2 Addresses, essays, lectures 1 Alien labor 1 Arbitration, International 1 Armed Forces 1 Civil-military relations 1 Coalition (Social sciences) 1 Communism 1 Communist parties 1 Confederation of states 1 Congresses 1 Developing countries 1 Drug abuse 1 Economic policy 1 Elections 1 Elections, 2009 1