The assembly of an archive of longitudinal data on the world's nation-states was undertaken by the Center for Comparative Political Research in 1968, with computer-facilitated procedures for the storage, reassembly, and retrieval of its content. The present volume is a cathode-ray-tube printout of a substantial portion of the CCPR file.The period chosen dates from 1815 (immediately after the Congress of Vienna and the establishment of the modern international system) to 1966, and excludes the years of the two major wars, 1914-1918 and 1940-1945. Virtually all independent nation-states...