# Maastricht Treaty

> Founding treaty of the European Union, signed in 1992 and effective from 1993

**Wikidata**: [Q11146](https://www.wikidata.org/wiki/Q11146)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Maastricht_Treaty)  
**Source**: https://4ort.xyz/entity/maastricht-treaty


## References

1. Freebase Data Dumps. 2013
2. BBC Things
3. [Source](https://encyklopedia.pwn.pl/haslo/traktat-z-Maastricht;3988633.html)
4. National Library of Israel Names and Subjects Authority File
5. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)