-1931: Flooding in China killed between 2,000,000 and 4,000,000 people.
-1887: Yellow River floods claimed between 1,000,000 and 2,000,000 lives.
-1938: Yellow River floods killed between 500,000 and 700,000 people.

To control the devastating effects of flooding, China has built the...

a) Second Great Wall

b)Grand Canal

c) Three Gorges Dam