For centuries, Dubrovnik was an ally of Ancona, the other Adriatic maritime republic rival of Venice, which was itself the Ottoman Empire's chief rival for control of the Adriatic. This alliance enabled the two towns set on opposite sides of the Adriatic to resist attempts by the Venetians to make the Adriatic a "Venetian Bay", also controlling directly or indirectly all the Adriatic ports. Ancona and Dubrovnik developed an alternative trade route to the Venetian (Venice-Austria-Germany): starting in Dubrovnik it went on to Ancona, through Florence and ended in Flanders [//upload.wikimedia.org/wikipedia/commons/8/8d/Repubbliche_marinare_-_fondachi_anconitani.png as seen on this map].