The European Downworlder Treaty was an agreement between Shadowhunters and Downworlders. It was signed at the end of the Napoleonic Wars in 1815, by then Consul Shimizu-Tokugawa Katsugoro.

It is the first official document that promised protection under the Law for Downworlders and is credited as being one of the first documents that led to the development of the Accords.


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