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Political Institutions and Their Historical Dynamics

Figure 2

Historical Dynamics of the Factional/Sectarian (Oligarchy) Dimension.

The figure 2 shows the number of nations having the two core institutions of oligarchy; Competitiveness of participation: factional (blue); Regulation of participation: sectarian (green). Nations may have none, one, or two of these institutions. The sum of those nations that have both of them is indicated (black). In addition, the number or nations being “anocracies” in the sense of having −5 to 5 on the (revised) Polity score is given (dashed).

Figure 2

doi: https://doi.org/10.1371/journal.pone.0045838.g002