McLaughlin, Sara; Gates, Scott; Hegre, Håvard; … - In: Journal of Conflict Resolution 42 (1998) 2, pp. 231-242
This article introduces the Polity IIId (“d†is for dates) data set. The Polity IIId project codes the precise dates of changes in political structure identified by Polity III for all independent countries in the international system from 1800 to 1994. By moving from annual...