How did loess influence the development of early Chinese civilization?
A. To prevent Invaders from using Loess Bridges to cross the Huang, soldiers had to be posted to keep watch
B. To limit erosion caused by Loess, people had to plan to regularly clear public pass and roads
C. To avoid flooding calls by settling Loess raising the huang's water level peasants had to maintain dikes
D. To protect crops against destructive loess storms Farmers had to set up networks of windbreaks