Why was the Grand Canal built? To move military forces to conquer southern China

To help unify China

To protect China from nomads

To outcompete the Silk Roads

The answer may be to unify China but I may be wrong

Explanation:

I say this because the canal linked north and south china allowing the wheat grown into the south to be eaten in the big cities.

a historian who compares the expansion of political systems to the expansion of economic systems to the expansion of economic systems is organizing history by theme.

hope this : d