The paper is organized as follows. Section 2 gives an overview of the process of our empirical strategy. Our instrument is developed in Section 3. The IV construction is based on two steps: first, the prediction of economic activity at grid-cell level from first-nature determinants (Section ...
The rest of the paper is organized as follows. Section 2 presents the theoretical discussion of the relationship between geography and news on innovation and technologies, particularly focusing on the regional level. Section 3 describes the data and our empirical approach. Section 4 presents the esti...
In a forthcoming accompanying paper (Tang et al.2017), we deploy comparative case studies with process-tracing to demonstrate that the mechanisms singled out by our theory really did drive ethnic wars, whereas ethnic peace usually results when these mechanisms lay dormant. Our case studies also st...
the year when the USPTO began to record patents electronically. The main objective of this paper is to present HistPat, a well-structured, ready-to-use, comprehensive, and geo-referenced dataset of historical patents in the United States covering the years 1836 to 1975. HistPat contains...