だい日本 にっぽん ゆたか秋津洲 あきつしまじゃなかったです
dainippon'yutakākitsushimajanakattadesu

Noun
Desu Copula

The polite, past negative form of 大日本豊秋津洲

1. Wasn't Yamato-Tōkyō.; Wasn't abundant harvest land.

Past/Perfective
Negative
Polite
Casual Register