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Donald Trump promised America a new “golden age”. You can be forgiven for discounting his promises. But he could reach epoch-defining achievements on foreign policy, immigration and other areas, argues our
Lexington columnist.
Mr Trump has shown flashes of willingness to get there—but usually gets in his own way.
And economists love cities, for bringing together capital, infrastructure and especially people and their ideas. This is good for efficiency. But do cities really need to be as big as New York or London? A
new paper
says no. | 
