協力した

cooperated

→ 協力
phrase Rare #24,470
cooperated The past form of 協力する, meaning to cooperate, collaborate, or help. It can be followed by と to indicate who someone cooperated with.
JA: 彼は捜査に協力した。
EN: He cooperated with the investigation.

ユダヤ人協力した同罪

Those who collaborated with the Jews are equally guilty.

— ジョジョ・ラビット (2019)

あなたが協力したので

Weren't you the one who helped?

— 嵐の中で (2018)

そうそのために俺達は協力した

That's right. That's what we worked together for.

— ブレードランナー 2049 (2017)

困っている子供たちのために私たちは募金活動協力した

We helped with the fundraising campaign for children in need.

見つかれば政府が追って来る協力した人間

If they find it, the government will come after anyone who helped as well.

— タクシー運転手 約束は海を越えて (2017)

私は彼と協力した

I worked with him.

それで工場のみんな仕方なく協力したことにすれば当局言いわけたつでしょう

Then everyone at the factory can tell the authorities they cooperated because they had no choice, and that should serve as an excuse.

— 紅の豚 (1992)