興亡 こうぼう盛衰 せいすいじゃなかったです
kōbōseisuijanakattadesu

Noun
Desu Copula

The polite, past negative form of 興亡盛衰

1. Wasn't flourishing/declining.; Wasn't prosperous/decaying.

Past/Perfective
Negative
Polite
Casual Register