Ivan the Kulak
King
I have noticed that I can't always trade workers, even when one is in my capital and I want to offer it to another civ. I very rarely do this, but I was wondering if anyone knew what the prerequisite for this was? I though it might be linked to both me and the other guy having a certain advance. I tried once we both had Nationalism, Replaceable parts, but those seem not to matter. Will the AI simply not accept workers in trade under some circumstances, thus the option is not available? I occasionally will try to trade slaves away, but wait until I have crushed the civ from which I got the slave worker.