I found in GlobalDefines.xml row: <DefineName>MAX_TRADE_ROUTES</DefineName> with zero value. This means no trade routes allowable in game? Probably this is the reason why I do not see any trade routes in my cities. What you think? I changed value to 5 and will try it. Also question did you find how to enslave barbarian units in game? I still do not have any slaves. What value in what xml is responsible for enslave probability event?