The Silk Road Interlinked Asia with the Mediterranean and European world. In a sense, this event is not in a specific category, but it helped to facilitate two of them. The silk Road helped spread religion, most namely Islam, Buddhism, and Christianity. Also the Silk Road spread extremely important technology such as paper and gunpowder. If it had to fit one category, the main overarching one would be technology because it was a trade route and it focused on goods and new technology, whereas the religion was a facet of the Silk Road exsisting.