European Union
The European Union evolved from the aftermath of World War Two, when a Europe torn apart by war decided to more closely integrate themselves to, in part, prevent further conflict. The union was at first economic - the 1957 Treaty of Rome creating the European Economic Community - but has since grown and expanded to include its own laws and government. The ‘EU’ itself formed in 1993.
A multimedia history of the EU with an added glossary and thesaurus. The site seems to run in its own form of custom browser.
This excellent history of European Union begins with movements for integration which began in the aftermath of WW1.
The BBC has presented a brief history of the EU by focusing on key events.
This brief history of the EU – with summaries for each decade - is part of europa.eu, a site which provides information on what the EU does and member states, including a section called ‘Europe in 12 lessons’.