南北朝 なんぼくちょうじゃありませんでした
nambo kuchōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 南北朝

1. Was not the Northern and Southern Dynasties period.; Was not during the Northern and Southern Dynasties.

Past/Perfective
Negative
Polite
Terminal Form