Respuesta :
Explanation: Improved transportation technologies and commercial practices led to an increased volume of trade and expanded the geographical range of existing trade routes, including the Indian Ocean, promoting the growth of powerful new trading cities.
The causes of the growth of networks of exchange after 1200 rise because of the Silk Road, the Indian Ocean and Trans-Saharan trade.
- The Silk Road routes stretched from China and entered Europe crossing the deserts.
- Several check posts were built on the way for the merchants, travellers and animals to rest on long journeys.
- The exchange of goods also introduce technologies like a compass, gun powder, paper, etc., which led to the growth of trade.
Therefore we can conclude that several trading routes became important trading routes in 1200.
Learn more about "the silk road" here:
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