ソビエト社会 しゃかい主義 しゅぎ共和 きょうわ こくだったら
sobietoshakaishugi kyō wakokudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of ソビエト社会主義共和国

1. If it were a Soviet Socialist Republic; If it had been a Soviet Socialist Republic

Tara Conditional