Why did the United Kingdom not gain any lands in Europe?

The United Kingdom, while part of the European Union, does not use the euro as a common currency. The UK has kept the British Pound because the government has determined the euro does not meet five critical tests that would be necessary to use it.The UK formally left the EU on 31 January 2020, following on a public vote held in June 2016. ... After the European Parliament ratified the agreement on 29 January, the United Kingdom withdrew from the European Union at 23:00 London time (GMT) on 31 January 2020, with a withdrawal agreement in place.

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