D. because it is directly from the time
Farmers Grow Angry and Desperate. During World War I, farmers worked hard to produce record crops and livestock. When prices fell they tried to produce even more to pay their debts, taxes and living expenses. In the early 1930s prices dropped so low that many farmers went bankrupt and lost their farms.
I hope I help
If you meant by what is their economy...The economy of the People's Republic of China is a market-oriented economy that incorporates economic planning through industrial policies and strategic five-year plans.
:)
this shows that you should probably be doing your work and not cheating