Rotation.
Crop rotation is when a farmer changes the crops grown in the same field each year to ensure he gets the best harvest possible by not exhausting the soil of specific nutrients by repeatedly growing the same thing.
Beavers might be the most well-known animal architects, and with good reason. These prolific builders fell trees and gather sticks and mud to construct dams, which create ponds that offer predator protection and easy access to food during the winter.
The correct answer to this question is the Chinese.
<em>It is true that the Vietnamese lead independent movements against the Chinese.</em>
The first China invasion of Vietnam was in 111BCE. The Han Dynasty conquered Nam Viet. The second time China controlled Vietnam was in 618. The Tang Dynasty expanded its dominions so far and it reached Vietnam. The Chinese transmitted its philosophy, art, and poetry to the Vietnamese. In 938, Ngo Quyen led the Vietnamese Independence. So, it’s true that the Vietnamese lead independent movements against China.
