Question

china, seventh through eleventh centuries
the canal shown on the map was important during the tang and song dynasties primarily because it provided —
a flood control during monsoon season
b water to urban centers in arid regions
c a transportation route for military forces
d a means of shipping rice from farms to urban centers

Explanation:

The Grand Canal was crucial for transporting rice (a staple crop) from agricultural areas to urban centers during the Tang and Song dynasties. It was not mainly for flood - control (A). The regions along the canal were not arid (B). While it could be used for military transport, its primary economic function was more significant than military (C).

Answer:

D. a means of shipping rice from farms to urban centers