We investigate how bank migration across state lines over the last quarter century has affected the size and covariance of business fluctuations within states. Starting with a two-state version of the unit banking model in Holmstrom and Tirole (1997), we conclude that the theoretical effect of...

Language is a fundamental tool for communication of ideas between people, and so is an essential input into production and trade. In general, a society will possess more production and consumption opportunities when all its members share a common language. Neighboring societies and communities...