있었으니까

because there was, because (someone) had

→ 있다
verb · informal, past tense Rare #30,877
because there was, because (someone) had Past-tense form of 있다 followed by the causal ending -으니까.
KO: 시간이 있었으니까 천천히 준비했어요.
EN: Because we had time, we prepared slowly.
Conjugation of 있다

이 순간의 파도만으로도 죽을 수 있었으니까.

Because even this wave alone could have killed me.

그건 무엇 일 수도 있었으니까

Because it could have been anything.

— 잠입자 (1979)

당신 에게 다른 삶이 있었으니까 우리가 여기 있는 거 죠

We're here because you had another life, aren't we?

— 폭풍의 시간 (2018)