This paper addresses the question whether the domino theory of regionalism is a reasonable explanation for the growth in EU membership over the past forty years. In essence, this theory states that the conclusion of a new regional trade agreement or the deepening of an existing one will induce...

This paper empirically confronts one explanation of spreading regionalism with the European experience. The domino theory asserts that forming a preferential trade area, or deepening an existing one, produces trade diversion that generates new political-economy forces in third nations as...