mutual intercourse

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Spain thinks it convenient to shut the Mississippi against us on the one side, and Britain excludes us from the Saint Lawrence on the other; nor will either of them permit the other waters which are between them and us to become the means of mutual intercourse and traffic.
She had a turn for narrative, I for analysis; she liked to inform, I to question; so we got on swimmingly together, deriving much entertainment, if not much improvement, from our mutual intercourse.
Law keeps international society running, contributes to order and stability, provides a basis and a framework for common enterprise and mutual intercourse.

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