History 118 Politics and government 74 Political violence 29 Social conditions 28 Foreign relations 18 History and criticism 17 Social conflict 15 In literature 14 Boundaries 12 Irish authors 11 Peace-building 11 Conflict management 10 Constitutional history 10 Diplomatic and consular service, Irish 10 Social life and customs 10 Territory, National 10 Civilization 9 Nationalism 9 Terrorism 9 Political aspects 8 Political prisoners 8 Violence 7 Criticism and interpretation 6 Political activity 6 Relations 6 Emigration and immigration 5 Ethnic relations 5 Group identity 5 Intellectual life 5 Paramilitary forces 5