春秋しゅんじゅう戦国せんごく時代じだいだったら
shunjūsengokujidaidattara

Noun
Da Copula

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

1. If/when the Warring States period…; Had the Warring States period been…

Tara Conditional