"every year the king of the country of ta-shih (the arabs of the khalif empire) who is styled su-tan (sultan) sends tribute-bearers, and if in the country some trouble is apprehended, he gets the ta-shih to use their military force in restoring order
the products of the country consist of opaque glass, corals, raw gold, brocades, sarcenets, red cornelian stones and real
pearls"
- chinese official letter documenting the song and yuan dynasties, translated and published in china and the roman orient: researches into their ancient and mediaeval relations as represented in old chinese records, published 1885

what religion would the chinese have come into contact with between 600-1450 based on the information presented in this
passage?
a)
buddhism
christianity
hinduism
islam
i really need on this i'm very confused.