progress in transportation 意味

• 交通｛こうつう｝の発達｛はったつ｝
  

例文

1. after the kamakura period , due to the decline of the imperial court ' s finance , expansion of shoen (manor in medieval japan ) and progress in transportation , checkpoints were set up to take certain tolls to help in the repair of the imperial palace , temples and shrines .
   鎌倉時代以後、朝廷財政の衰微と荘園の拡大、交通の発達によって、内裏や寺社の修繕のために一定の通行料を取る関所が設置されるようになった。