What region acted as a middleman in the trade between the roman and han empires?

The region that acted as a middleman in the trade between the Roman and Han empires was Central Asia, particularly the area along the Silk Road. This extensive network of trade routes facilitated the exchange of goods, ideas, and culture between the two powerful empires, allowing luxury items such as silk, spices, and precious metals to flow between them. Various nomadic tribes and city-states in Central Asia played crucial roles in mediating these exchanges.