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International Subsystems, 1649-1963 (ICPSR 5011)

Principal Investigator(s): Haas, Michael


This study of the structure of the international system and its consequences for national war behavior is composed of three distinct types of data: Member Characteristic Data, Subsystem Data, and War Data, consisting of Richardson's Deadly Quarrel Data, Wright's War Data, Singer and Small's War Data, and Sorokins' Disturbance Data. In the Member Characteristic Data, each member of each subsystem is the unit of observation and the national characteristics of each member are reported. In the Subsystem Data, 21 subsystems constitute the unit of observation, with variables recording the number of members, wars, alliances, and polarity of each subsystem. The War Data report the war behavior of each of the 21 subsystems, with one record for each war as reported in the four major studies of war from which they were compiled.

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Study Description


Haas, Michael. INTERNATIONAL SUBSYSTEMS, 1649-1963. ICPSR05011-v1. Honolulu, HI: Michael Haas, University of Hawaii [producer], 1968. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 1999. https://doi.org/10.3886/ICPSR05011.v1

Persistent URL: https://doi.org/10.3886/ICPSR05011.v1

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Scope of Study

Subject Terms:    foreign affairs, historical data, international conflict, international relations, militarism, national interests, nations, political systems, war, world politics

Geographic Coverage:    Global

Time Period:   

  • 1649--1963

Universe:    Nations considered to be part of the international system in the period 1649-1963.

Data Type(s):    aggregate data


Data Source:

(1) Richardson, Lewis F. STATISTICS OF DEADLY QUARRELS, 1809-1949 (ICPSR 5407), (2) Rosecrance, Richard N. ACTION AND REACTION IN WORLD POLITICS: INTERNATIONAL SYSTEMS IN PERSPECTIVE. Westport, CT: Greenwood Press, 1977, (3) Sorokin, Pitirim A. SOCIAL AND CULTURAL DYNAMICS. London, England: G. Allen and Unwin, 1937, (4) Speeckaert, G.P. THE l,978 INTERNATIONAL ORGANIZATIONS FOUNDED SINCE THE CONGRESS OF VIENNA: CHRONOLOGICAL LIST WITH AN INTRODUCTION BY G.P. SPEECKAERT. Brussels, Amsterdam: Union of International Associations, 1957, (5) Singer, David J., and Melvin Small. "The Frequency, Magnitude and Severity of International War: 1815-1945", and (6) Wright, Quincy. A STUDY OF WAR. Chicago, IL: The University of Chicago Press, 1962.


Original ICPSR Release:   1984-05-03

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