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を乱した

… disturbed

→ を
phrase Rare #41,594
… disturbed を marks the object of 乱した, the past form of 乱す. Depending on context, it can mean upsetting someone or disrupting something, such as public order.
JA: 彼の言葉は彼女の心を乱した。
EN: His words disturbed her.

彼はその知らせに心を乱した。

He was deeply disturbed by the news.

でなけりゃ、治安を乱した罪で逮捕させるぞ

Otherwise, I’ll have you arrested for disturbing the peace.

恋人の死の知らせに彼女は大いに心を乱した。

The news of her lover’s death deeply upset her.

“彼が実際に暴力に関与し治安を乱した事が？”

That he was actually involved in violence and disrupted public order?

— マルコムＸ (1992)