The grand canal was built to connect the yellow sea and the east china sea. the yangtze river and the east china sea. the huang he river and the yangtze river. the huang he river and the yellow sea.

The Huang He River and the Yangtze River.

The Grand Canal is the longest and oldest canal or artificial river in the world. The oldest parts of the canal date back to the 5th century BC, but it was significantly rebuilt between 1271 and 1633. The canal starts at Beijing, passes through Tianjin, Hebei, Shandong, Jiangsu and Zhejiang to the city of Hangzhou. The canal links the Huang He and the Yangtze rivers.

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it would be a. that is the only one i could think of