James Gordon Brown1 December 2009
The Treaty of Lisbon enters into force across the European Union.
Great Britain · Government / European Union. Chronological records rendered directly from the World History Database.
The Treaty of Lisbon enters into force across the European Union.
This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.