1. History of the European Union

3. The European Union is a geo-political entity covering a large portion of the European continent. It is founded upon numerous treaties and has undergone expansions that have taken it from 6 member states to 28, a majority of states in Europe.

4. As distinct from ideas of federation, confederation or customs union the main development in Europe depends on a supranational foundation to make war unthinkable and materially impossible[1][2] and reinforce democracy[3] enunciated by Robert Schuman and other leaders in the Europe Declaration.

6. The principle was at the heart of the European Coal and Steel Community (ECSC) in the Treaty of Paris (1951), following the "Schuman Declaration" and the later the Treaties of Rome establishing the European Economic Community (EEC) and the European Atomic Energy Community (EAEC). Both the ECSC and EEC were later incorporated into the European Union while the EAEC maintains a distinct legal identity despite sharing members and institutions.

7. Europa regina in Sebastian Münster's "Cosmographia", 1570. Large areas of Europe had previously been united by empires built on force, such as the Roman Empire, Byzantine Empire, Frankish Empire, Holy Roman Empire, Ottoman Empire, the First French Empire and Greater German Reich. A peaceful means of some consolidation of European territories used to be provided by dynastic unions; less common were country-level unions, such as the Polish–Lithuanian Commonwealth and Austro-Hungarian Empire

8. In the Congress of Aix-la-Chapelle of 1818, Tsar Alexander, as the most advanced internationalist of the day, suggested a kind of permanent European union and even proposed the maintenance of international military forces to provide recognised states with support against changes by violence.

9. Largely due to the devastating effects of war many people turned to the idea of some form of unified Europe, notably William Penn, Abbot Charles de Saint-Pierre, Victor Hugo, Richard Coudenhove-Kalergi and Giuseppe Mazzini. Such ideas became greater in Europe following World War I, with the massive loss of life it entailed, but it was not until after World War II that real steps were taken.

10. Main article: History of the European Communities (1945–1957) World War II from 1939 to 1945 saw a human and economic cost which hit Europe hardest. It demonstrated the horrors of war and also of extremism, through the Holocaust and the atomic bombings of Hiroshima and Nagasaki,

11. Robert Schuman proposed the Coal and Steel Community in May 1950. On the basis of that speech, France, Italy, the Benelux countries (Belgium, Netherlands and Luxembourg) together with West Germany signed the Treaty of Paris (1951) creating the European Coal and Steel Community the following year; this took over the role of the International Authority for the Ruhr[1] and lifted some restrictions on German industrial productivity.

12. It gave birth to the first institutions, such as the High Authority (now the European Commission) and the Common Assembly (now the European Parliament). The first presidents of those institutions were Jean Monnet and Paul-Henri Spaak respectively.