ç´5000å¹´åã«åãã¦ãå½å®¶ããæç«ããçç±ã«ã¤ãã¦ã¯é·ããããè¾²èã«ãã飿ä½å°ã社ä¼ã®é層åãä¿ãããããã¨ãã説æãå®èª¬ã¨ããã¦ãã¾ããããããã2025å¹´11æ25æ¥ã«çºè¡¨ãããè«æã§ã¯ããããå½å®¶ãå ã«çã¾ããå½å®¶ãè¾²èãè¨é²å¶åº¦ã®çºéãå¼ãèµ·ãããå¯è½æ§ã示ããã¾ããã State formation across cultures and the role of grain, intensive agriculture, taxation and writing | Nature Human Behaviour https://www.nature.com/articles/s41562-025-02365-5 The real reason states first emerged thousands of years ago â new research https://


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