How does friar redeem himself at the end of his speech

ddresses the Capulets and Montagues expressing his disappointment. During his speech, he says the following:

"And I for winking at your discords too

Have lost a brace of kinsmen: all are punish'd."

It is not so much that the Prince blames himself for the tragedy, but he does take responsibility for not having done enough to stop the feud between the families. He says that he was only "winking" at their strife. This suggests that he feels that he had temporarily closed his eyes to their battle, choosing to, at most, ignore the ongoing dispute. The Prince essentially puts forward that he could have done more and that, if he had done so, the present tragedy would not have occurred

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the answer is:

magna carta