1. How Did Britain Get Here?
Britain joined the European Economic Community — now the EU — in 1973, but has long been an ambivalent member. The UK never adopted the euro as its currency, and British politicians have been cool to the bloc's calls for ever-closer political union.
In 2013, then-Prime Minister David Cameron pledged to hold a referendum on Britain's EU membership "to settle this European question" once and for all.
He was confident voters would choose to remain, but on 23 June, 2016, they voted by 52 percent to 48 percent to leave. Cameron resigned, leaving his successor, May, to carry out the monumental move. Last year, May triggered the two-year countdown to departure for 29 March, 2019.
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