Over the centuries for two thousand years the Silk Road was a network of roads for the travel and dissemination of religious beliefs across Eurasia. … Traders who used the Silk Road regularly therefore built shrines and temples of their own faiths wherever they went, in order to maintain their own beliefs and practices of worship while they were far from home. Missionaries of many faiths accompanied caravans on the Silk Road, consciously trying to expand the reach of their own religious persuasion and make converts to their faith. —The Asia Society, 2019

Which of the following significantly reduced the developments described in the source?

The emergence of the Mongols
The emergence of the Mongols

The adoption of a money-based economy

The adoption of a money-based economy,

The collapse of the Roman Empire
The collapse of the Roman Empire

The victory of civilization over barbarism