Relations History 16 International relations 7 Politics and government 7 Group identity 5 Social conditions 5 Attitudes 3 more ... Political activity 3 Political aspects 3 Social aspects 3 Youth 3 Youth protest movements 3 Architecture 2 Architecture and society 2 Berlin Wall, Berlin, Germany, 1961-1989 2 Boundaries 2 City planning 2 Diplomats 2 Economic conditions 2 Human factors 2 20th century, c 1900 to c 1999 1 ARCHITECTURE / Criticism 1 ARCHITECTURE / Urban & Land Use Planning 1 Americans 1 Armed Forces 1 Authors, German 1 Balance of power 1 Borderlands 1 Catholics 1 Civil-military relations 1 less ...