Tennessee Valley Authority Act

May 18, 1933:

President Franklin D. Roosevelt signs an act creating the Tennessee Valley Authority.
The Tennessee Valley Authority (TVA) is a federally owned corporation in the United States created by congressional charter in May 1933 to provide navigation, flood control, electricity generation, fertilizer manufacturing, and economic development in the Tennessee Valley, a region particularly affected by the Great Depression. The enterprise was a result of the efforts of Senator George W. Norris of Nebraska. TVA was envisioned not only as a provider, but also as a regional economic development agency that would use federal experts and electricity to rapidly modernize the region's economy and society.
TVA's service area covers most of Tennessee, portions of Alabama, Mississippi, and Kentucky, and small slices of Georgia, North Carolina, and Virginia. It was the first large regional planning agency of the federal government and remains the largest. Under the leadership of David Lilienthal ("Mr. TVA"), TVA became a model for America's governmental efforts to modernize Third World agrarian societies.

Tennessee, the first Third World agrarian society modernized by the United States:

Even by Depression standards, the Tennessee Valley was in sad shape in 1933. Thirty percent of the population was affected by malaria, and the average income was only $639 per year, with some families surviving on as little as $100 per year.  Much of the land had been farmed too hard for too long, eroding and depleting the soil. Crop yields had fallen along with farm incomes. The best timber had been cut, with another 10% of forests being burnt each year.

TVA was designed to modernize the region, using experts and electricity to combat human and economic problems. TVA developed fertilizers, taught farmers ways to improve crop yields and helped replant forests, control forest fires, and improve habitat for fish and wildlife. The most dramatic change in Valley life came from TVA-generated electricity. Electric lights and modern home appliances made life easier and farms more productive. Electricity also drew industries into the region, providing desperately needed jobs.

This is also interesting:

During World War II, the U.S. needed aluminum to build airplanes. Aluminum plants required huge amounts of electricity, and to provide the power, TVA engaged in one of the largest hydropower construction programs ever undertaken in the U.S. Early in 1942, when the effort reached its peak, 12 hydroelectric plants and one steam plant were under construction at the same time, and design and construction employment reached a total of 28,000. The largest project of this period was the Fontana Dam Project. After negotiations led by Harry Truman ("I want aluminum. I don't care if I get it from Alcoa or Al Capone."), TVA purchased the land from Nantahala Power and Light, a wholly owned subsidiary of Alcoa, and built Fontana Dam.
Electricity from Fontana was intended for Alcoa factories. By the time the dam generated power in early 1945, the electricity was used for another purpose in addition to aluminum manufacturing. TVA also provided much of the electricity needed for uranium enrichment at Oak Ridge, Tennessee, as required for the Manhattan Project.

Yes, the South is and always has been self-sufficient.  And never racist.