The third incidental factor depressing birth rates can be laid at the feet of the Americans’ grand plan for their post–World War II international Order. The urbanization trend was already going full steam before the world wars blasted the old system apart, but with the onset of the free trade Order, the world’s most advanced economies—most notably Western Europe and Japan—were no longer burdened with a world of constant, high-velocity war. Countries could focus on what they did best (or at least, what they wanted to do best), and the security placidity of the Order enabled them to import food
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