National and international market integration in the 19th century: Evidence from comovement

This paper analyzes relative wheat price fluctuations to investigate market integration among 72 European and US cities. Applying a Dynamic Factor Model, which has seldom been used in market integration analysis, prices are decomposed into international, national and local components. Thus, national and international market integration are identified by a statistical restriction, and results for each single market are obtained. The first result is that globalization has accelerated faster in the first than in the second half of the 19th century, putting the post-1850 transport revolution into perspective. The USA integrated only later into the European market, discounting the role of the “grain invasion” for trade history. I also show that the European nations that turned protectionist after 1880 reduced the impact of foreign shocks, while free traders fully integrated into the international economy.