Category talk:Treaties by year of conclusion

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There is no Category:XXX (things) by year of conclusion??? --Catalaalatac (talk) 17:34, 19 March 2011 (UTC)
 * Treaties are "concluded" when they are agreed to or signed. What other kinds of things are "concluded"? It's more likely other things will just be in categories like or, etc. Good Ol’factory (talk) 21:28, 20 March 2011 (UTC)