While some people say that the spread in tumulus culture shows the expansion of the forces of the Yamato kingship, the expansion in religious culture doesn't necessarily correspond to the expansion of authority.
また、古墳文化の広がりをもってヤマト王権勢力の拡大と見なす意見があるが、宗教文化の広がりと権力の広がりとは必ずしも一致するものではない。