1. Globalization, trade, and migration -- 2. Demographic openness and trade openness -- 3. Crossover -- 4. Emigration and immigration -- 5. The British connection -- 6. A splendid isolation -- 7. Into the maelstrom : the political economy that battled diversity and openness -- 8. An open world being born -- 9. Conclusions -- App. A.1. The data -- App. A.2. The statistical analysis / David Giles.