Which civilization used infrastructure to facilitate trading?

Roman

Extensive trade routes were established on land and sea. The Roman roads are one lasting legacy of Roman domination and many are still in use today. While the benefit of a large network of roads was the transport of goods, their most significant purpose was the fast mobilization of the legions.

c. troops marched forward in close formation against newer, more accurate weapons

it met the katy line in vinita.

iv. it traveled through cherokee and quapaw tribal lands.