荘園の変質　室町時時代後半、荘園が解体したのは何故か？　代官制の導入・土一揆の勃発　【伊藤俊一著荘園を秦野裕介先生が解説】

New channel 日本史オンライン講座: title sample judged 'whole' (A dedicated Japanese history teaching channel with lecture series, scholar-led seminars, and structured courses that ove); 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.