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
dainippon'yutakākitsushimajanakatta

Noun
Da Copula

The past negative form of 大日本豊秋津洲

1. Wasn't Great Japan, abundant autumn land.; Wasn't the bountiful land of Great Japan.

Past/Perfective
Negative