International Regions and the International System, 1969 Russett, Bruce M. foreign affairs international organizations national income political attitudes political systems trade United Nations IDRC.VIII IDRC.VI ICPSR.XI.C IDRC.I IDRC.II This study contains data on regions of comparable political, social, economic, and cultural systems worldwide in 1969. Data are provided on measurements of social and cultural homogeneity, similarities in political attitudes and external behavior measured by voting patterns in the United Nations (U.N.), political interdependence, economic interdependence measured by intra-regional trade as a proportion of the nations' national income, and geographical proximity. 2006-01-12 aggregate data roll call voting data survey data 5652 10.3886/ICPSR05652.v1 Global 1969 ICPSR metadata records are licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License (http://creativecommons.org/licenses/by-nc/3.0/us/).