D, By deploying military forces to break up the protests.
The drought and erosion of the Dust Bowl affected 100,000,000 acres (400,000 km2) that centered on the panhandles of Texas and Oklahoma and touched adjacent sections of New Mexico, Colorado, and Kansas.
A major cause of the economic depression of 1929 was the banks investing all the peoples money and the stock market crashing.
I think the Byzantine Economy.. not 100% sure though.
