How did the Grand
Canal help China's
economy?

The canal was built in order to easily ship grain from the rich farmland in southern China to the capital city in Beijing. This also helped the emperors to feed the soldiers guarding the northern borders. The Ancient Chinese built early canals to help with transportation and commerce.

Explanation:

China has two main river systems the Yellow River and the Yangtze River. The Grand Canal connects the two Rivers systems. This makes it possible to ship grain from the agricultural south to the more industrial north. It also helped bring supplies to the Chinese armies defending the northern borders.The Grand Canal made it possible for China to be one united country rather than being ruled by small independent warlords.

Explanation:

under god i have placed my chiest strentgh and the safe guard to my loyal subjects