Shogun 2: Total War - Fall of the Samurai Message Board  

What kind of event is required in order to open trade to either French, British or Americans in this campaign. Any help would be appreciated.

this site will give you what you need.
forums.totalwar.com/showthread.php/35538-Event-Require-(recruit-foreign-troops)

youll get an event window eventually asking to allow foreign devils in :P it will be one at a time usaly diffrent turns you can only get one so make sure you get the right one

If you want you may close out or delete this thread. The event is simply the offer of establishing a military mission (American, British, or French) If you are a Shogunate clan you will either get American or French. Contrarily, if you are an Imperial clan, you will get either the British or the Americans.
Good luck with this and thanks a bunch.