Since Treon aims at unbanked,i would say less developed regions like Africa and southeast Asia.I might be wrong though,but that seems like a place to start.
But would that area be a good starting point? Could you really start off big in those regions?
I also think that some of the above mentioned regions will be the starting point, it is expected to move to the European countries later...
In the end they should be oriented to economically stronger markets.
Maybe due to available internet connection europe will be better market.
I do not believe that internet connectivity is a key factor, of course, it play a role, but the economic strength of a particular market is key factor.