In the era from the arrival of Kuro-fune (Japanese name for Perry's Fleet) to the end of the bakufu system, sakaya also advanced into information business by effectively using the information territory of these sales persons, human relations with trading company employees from western powers, and their own distribution routes.
黒船から幕末にかけては、このような営業マンの持つ情報テリトリーと、押し寄せてきた欧米列強の商社マンとの人脈、廻船や早馬など強力な自家流通ルートを生かして、情報産業にも進出していった。