The trading center of the Bosnian kingdom was Podvisoki, which had a considerable colony of Ragusian merchants. From 1404 to 1428, Podvisoki is frequent caravan destination. Milaš Radomirić was a prominent merchant from Visoko, later accepted as a Republic of Ragusa citizen. On April 9, 1428, wedding engagement was made between Tvrtko II and Dorothy Garai, and by July 31 Ragusian asked for the queen to stop by Podvisoki so she could receive gifts. The biggest caravan shipment was recorded in 1428. On August 9, Vlachs committed to Ragusan lord Tomo Bunić, that they will with 600 horses deliver 1500 modius of salt. Mile was one of the places where Bosnian nobility and kings held stanak.