World War I, or the Great War, was a global war, centred in Europe, that began on 28 July 1914 and lasted until 11 November 1918. It involved all of the world’s great powers, which were assembled in two opposing alliances, the Allies the Central Powers. Ultimately, more than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history. The outcome of the war subsequently paved the way for various political changes, such as revolutions in many of the nations involved.

The British newspaper The Guardian calls the Brexit-referendum the ‘biggest political decision of the century’. British voters: ‘Should the United Kingdom remain a member of the European Union or leave the European Union?’ On 29 March 2019 — the first date of ‘Brexit’ — the British Parliament (House of Commons) has shown many ‘NO’ ‘s to the Withdrawal Agreement Theresa May had negotiated with the European Union. This library special provides background information about (the) Brexit (process).