Sacchodo was called 'Yuhan' (powerfull domain) in the end of Edo period, and produced many patriotic samurais, and a generic name of 'Royal three Domains,' Satsuma Domain, Choshu Domain, and Tosa Domain which were the of the Meiji Restoration, or a generic name of the patriotic Samurais from these three Domains.
薩長土（さっちょうど）は、幕末期、「雄藩」と呼ばれ、多くの志士を輩出し、明治維新の原動力となった薩摩藩、長州藩、土佐藩の「勤皇三藩」の総称、あるいは、この3藩出身の志士たちの総称。