This text analyzes how the EU referendum in the United Kingdom came to pass and what the foreseeable consequences are for the UK, Europe, US and world economy. The Brexit decision represents a momentous event for Europe, which weakens the EU and shifts the global balance of power. Welfens argues the EU has lost its appeal and is not in keeping with the 21st century, which is being shaped by Asia and digital innovations. The subject of immigration from EU countries played a key role in the Brexit decision, with an anti-EU campaign that was profoundly biased. The estimated impact of the referendum was deeply distorted by the broadly inadequate information produced by the Cameron government, which omitted the expected 10% loss in income caused by leaving the EU.