Answer:
The Silk Road - The glass and leather industries, and Western weapons and war machines travelled from the West to be introduced in the Far East. The West benefited from four inventions from China that were to shape the new world (and its new order): paper and its manufacture, printing techniques, gunpowder and the compass.
The Indian Ocean Trade - Improvements of maritime technologies like lateen sails (the first triangle-shaped sails, allowing ships to be far more maneuverable), dhow ships and the astrolabe (an instrument that vastly increased accurate navigation by measuring the stars), helped sailors navigate safely and consistently throughout the Indian Ocean