In 1973, the United Kingdom joined the European Union (EU), an economic and political partnership that has grown to 28 European countries. In 2016, the people of the United Kingdom voted for their country to withdraw from the EU. (England and Wales voted for withdrawal; Scotland and Northern Ireland, against.) Yet, in a 1975 UK referendum on whether to leave the EU, 67% voted to remain. Dr. Jason Nice provides an historical context to explain this dramatic change in public opinion.