Krishna Deva refers to this in his Telugu poem, Amuktamalyada. A king should improve the harbours of his country and so encourage its commerce that horses, elephants, precious gems, sandalwood, pearls, and other articles are freely imported into his country. He should arrange that the foreign sailors who land in his country on account of storm, illness, and exhaustion are looked after in a manner suitable to their nationality. … Make the merchants of distant foreign countries who import elephants and good horses be attached to yourself by providing them with daily audience and presents and by
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