Some of the biggest recipients of aid are hotbeds of the very discontent that’s driving the bloc apart.

The European Union has spent nearly $1 trillion to unify the continent by delivering highways and trains into places where there were once gravel paths. In current dollars, that is over eight times the Marshall Plan that rebuilt Europe after World War II. The EU has bought airports and bridges, trams and swimming pools. It has repaired castles and medieval churches. It hasn’t bought love. To the vexation of European leaders, some of the biggest recipients of funding are now hotbeds of discontent, brimming with voters disquieted by the cultural and political pressures that have accompanied European integration, and threatening the bloc’s cohesion.

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