The Geography of the International System: The CShapes Dataset

@article{Weidmann2010TheGO,
  title={The Geography of the International System: The CShapes Dataset},
  author={Nils B. Weidmann and Doreen Kuse and Kristian Skrede Gleditsch},
  journal={International Interactions},
  year={2010},
  volume={36},
  pages={106 - 86}
}
We describe CShapes, a new dataset that provides historical maps of state boundaries and capitals in the post-World War II period. The dataset is coded according to both the Correlates of War and the Gleditsch and Ward (1999) state lists, and is therefore compatible with a great number of existing databases in the discipline. Provided in a geographic data format, CShapes can be used directly with standard GIS software, allowing a wide range of spatial computations. In addition, we supply a… 
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