On June 23rd, 2016, the UK held a referendum, asking its population if the United Kingdom should continue being a member of the European Union or leave. Prime Minister David Cameron called the referendum as promised during his election campaign in 2015.
The result was that 51.9% of voters opted to leave the EU, while 48.1% wanted to stay. Due to the majority vote, the UK would withdraw from the EU.
The primary reasons for leaving the EU were so that the UK could make its own decisions regarding immigration, laws, and trade and create regulations outside of EU influence, which many believed was damaging the country.