You have chosen 'Nature and Observability of Causal Relations' by Curt Ducasse, 'Absolute Necessities' by Bob Hale and 'Principles of Nature and Grace based on Reason' by Gottfried Leibniz
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| A. | Basis of a State | |
| B. | Nature of a State | |
| C. | Ruling a State | |
| D. | Ideologies |