FREE 100 POINTS

Taizu, the first emperor of the Bei Song Dynasty, started the process of using cartography to rule a kingdom. Why would mapmaking be helpful to an emperor?

Detailed maps made transportation of goods by sea easier and cheaper.
Detailed maps provide valuable information for military campaigns and tax collection.
Detailed maps allowed the emperor to show foreign traders the extended borders of China.
Detailed maps make great visuals in printed works, which were sponsored by the emperor.