The sea borne trade between India and Rome received great impetus during the first-second century A.D. on account of the discovery of:
The sea borne trade between India and Rome received great impetus during the first-second century A.D. on account of the discovery of:
(a) Direct sea-route between India and Italy
(b) Monsoon winds blowing regularly across the Indian Ocean
(c) Large gold mines in the Roman Empire
(d) New navigational techniques
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