太平 たいへい よう安全 あんぜん保障 ほしょう条約 じょうやくでした
taiheiyō anzenhoshōjōyakudeshita

Noun
Desu Copula

The polite past form of 太平洋安全保障条約

1. Was the Treaty of Mutual Cooperation and Security between the United States and Japan.

Past/Perfective
Polite