A. Grand Canal of China
B. Gota Canal of Sweden
C. Erie Canal USA
D. Suez Canal
Submitted by: Haziq
By far the longest canal was the Grand Canal of China, still the longest canal in the world today and the oldest extant one. It is 1,794 kilometres (1,115 mi) long and was built to carry the Emperor Yang Guang between Zhuodu (Beijing) and Yuhang (Hangzhou).