For the record, you will not get a new sub city, you will get a bundle of items for each bet....
To get a new sub city, you have to either get very lucky (Rare RNG), or attack someone else's and conquer it, but beware, they will likely hit you back (Maybe HARD)!!
Comment found on Evony: Where is the pool to place the clues
@Leo l
I don't think you can move a sub city, but don't quote me, I have not seen a definitive answer to this anywhere either!!
Comment found on Evony: subordinate city
@Leo l
I do not think that you can actually port a sub city to anew location....
Do not quote me, but I have not found a definitive answer to this either!!
Comment found on Evony: subordinate city