An archaeologist found some maps made by an ancient civilization. Which ancient map would be the most likely to show local trade routes

A thematic map would be more likely to show local trade routes.

Explanation:

Thematic maps represent the terrestrial surface, taking into account some specific element. Thus, thematic maps, in addition to presenting the physical characteristics of the region, can present elements capable of facilitating the reading of the map and presenting more information to the observer. In this way, a thematic map can show the location of monasteries, forests and even trade routes.

In this case, we can consider that a thematic map would probably present local commercial routes.