EN
The outcome of the British referendum of the 23th June 2016 was a beginning of Brexit. It was finalized latter on the 31st January 2020. Although, Brexit was a fundamental occurrence, it was not the only one that had an impact on the configuration of the European Union. The aim of the article is to analyse the selected national referenda, which were conducted in 1972-2012 and had an important impact on the extension of the European integration. Also, the article shows, to what extent decisions made by the citizens of particular states in ratification referenda contribute to changing the internal situation in these states and how a referendum in a specific country affects international relations.