幕藩 ばくはん体制 たいせいじゃありませんでした
baku hanta iseijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 幕藩体制

1. Was not a feudal domain system.; Was not a system of domain control.

Past/Perfective
Negative
Polite
Terminal Form