My work studies how the construction of international highways and the rise in automobile consumption in northern Mexico during the 1930s and 1940s facilitated the illegal entry of thousands of stolen cars from the United States and encouraged the expansion of vehicle theft in the U.S....

Several theories have been offered to explain the recent declines in violent crime rates in the United States. We hypothesize that technological innovations, which improved information transmission and shortened the response time between an aggravated assault incident and treatment, reduced the...