Contents -- List of Tables -- List of Figures -- Acknowledgments -- 1. Zones of Peace, Conflict, and Democracy -- 2. A Regional Approach to Conflict, Integration, and Democratization -- 3. Empirical Data, Measurement, and Methods -- 4. Do Zones of Democracy and Peace Coevolve? -- 5. Deutschian Integration and the Democratic Peace -- 6. Wealth, Conflict, and the Diffusion of Democracy -- 7. Conclusions and Implications -- Appendixes -- A. Independent States since 1816 -- B. Armed Conflicts from 1816 to 1996 -- C. A Primer on Generalized Additive Models -- D. Polity Democracy Scale and Modifications -- E. Symbols and Notation -- Notes -- References -- Index.