Question

click to correct the pronoun if needed. during the han dynasty, zhang qian served as an envoy of the chinese imperial court, establishing communication between they and their neighbors to the west by opening up the silk road.

Explanation:

The pre - position "between" requires object - case pronouns. "They" is a subject - case pronoun. The correct object - case pronoun is "them".

Answer:

During the Han dynasty, Zhang Qian served as an envoy of the Chinese imperial court, establishing communication between them and their neighbors to the West by opening up the Silk Road.