Dubrovnik was one of those medieval cities that began to conduct successful talks and negotiations with their neighbours
very early on, which in turn contributed to its economic and political strength. Communication between Bosnia and
Dubrovnik was established based on their geographic location and political and social circumstances. The fact that Bosnia
and Dubrovnik were indeed cooperating and also came into conflicts is proven by bilateral contracts, letters and other deeds,
which today are kept mostly by the State Archives in Dubrovnik. They have, to a large extent, been published in numerous
series of archival sources.