In history, a distinction between eras or periods, implies a major and fundamental change in the system of institutions governing a society.
Historians look at institutions to find differences between eras or periods.
Historians look at institutions to find differences between eras or periods.
これをもっとシンプルにしてください: In history, a distinction between eras or periods, implies a major and fundamental change in the system of institutions governing a society. 出力: