Having good ports such as Mutsuura and Shinagawa Minato Port, on the other hand, Musashi Province was actively engaged in trade with provinces in the west and the 'inland sea' stretching over the internal region.
反面、武蔵国は六浦や品川湊などの良港を抱え、西国や内陸部に広がる「内海」との交易を活発に行っていた。