日本 にっぽん列島 れっとう改造 かいぞう ろんであれば
nippon rettō kaizōrondeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 日本列島改造論

1. If the theory of reforming the Japanese archipelago…; If one were to reform the Japanese archipelago…

Ba Conditional