During the last century there has been a huge reduction in trade costs at almost every spatial scale impulsed not only by technological advances applied to transport and communication systems, but also by the spread of regional trade agreements and other related schemes. This estringent fall has...

I develop an index for economic integration accounting for its gradual and bilateral nature: the Gradual And Bilateral Integration (GABI) index. The graduality captures differences in the depth and path of five stages in economic integration and is an improvement over the use of binary dummy...