Which geographic factor enabled the cities of
Nanjing and Mogadishu to develop into powerful
trading centers?
(1) location on waterways
(2) abundance of natural resources
(3) predictable rainfall from the monsoon cycle
(4) access to mountain passes
It was the "(1) location on waterways" that was a geographic factor that enabled the cities of Nanjing and Mogadishu to develop into powerful trading centers.
