answer: a
While many New Deal programs faded when the U.S. entered World War II, the Tennessee Valley Authority played an important role in the country's military success. The TVA's nitrate plants produced the raw materials for munitions. Their mapping department produced the aerial maps used by aviators during campaigns in Europe. And when the U.S. government decided to develop the first atomic bombs, they built their secret city in Tennessee, where they could access millions of kilowatts produced by the TVA