Question

how have trade routes contributed in the exchange of ideas and commodities

Answer 1

India have propagated the ideas of the Upanishads and the Ramayana, the stories of Panchtantra, the Indian numerals and the decimal system as well as given spices, muslin and other merchandise to different countries.
Also, the influence of Greek sculpture, and the architectural styles of dome and minarets from West Asia can be seen in different parts of India.
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