春秋 しゅんじゅう戦国 せんごくだったら
shunjūsengokudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 春秋戦国

1. If/when the Spring and Autumn and Warring States period…; Were the Spring and Autumn and Warring States period…

Tara Conditional