At first I thought it would be op and that it gave a extra green point in the diplomatic screen to all races. So I tried building 10 embassy buildings that all give +1 Bonus.. but after doing that it didn't seem to increase more then one point. So is it caped? If that's the case why would you build more then one embassy?
Or does it increase your perceived Trade Value? tho that is also a separate modifier so im guessing its not that? Or does it reduces the turns you have to wait until you can trade again with a race?
Its not very clear, so any information would be great 