Answer:
During the time of the Great Depression many americans relied on crops and farming for income. The drought caused farming to become diffucult and killed off many of the crops so several families had no money coming in.
Biofeedback promotes relaxation in order to treat health conditions. Biofeedback therapy trains patients to be calm and relaxed using some exercises that will help one's body to treat or relieve any pain. These exercises will help the patient to be more in control of their own functions.