4 examples of due diligence in sentences

Major H. Whiting, U.S.A., writes from St. Augustine, Florida: "I have been favored with your letter of a month since, it having, I dare say, made all due diligence the post office arrangements admit.

In this tragedy are many passages perplexed, obscure, and probably corrupt, which I have endeavoured to rectify or explain, with due diligence; but having only one copy, cannot promise myself that my endeavours will be much applauded.

DRYASDUST, a name of Sir Walter Scott's invention, and employed by him to denote an imaginary character who supplied him with dry preliminary historical details, and since used to denote a writer who treats a historical subject with all due diligence and research, but without any appreciation of the human interest in it, still less the soul of it.

They decided that Great Britain had not used "due diligence" to prevent the abuse of her ports by the Confederates.

4 examples of  due diligence  in sentences