President Franklin Delano Roosevelt signed the Tennessee Valley Authority Act (ch. 32, , codified as amended at , et seq.), creating the TVA. TVA was designed to modernize the region, using experts and electricity to combat human and economic problems. TVA developed fertilizers, and taught farmers ways to improve crop yields. In addition, it 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 from the dams it constructed on area rivers. With electricity, farms could be provided with lights and modern home appliances, making the lives of residents easier and farms more productive. The available electricity attracted new industries to the region, providing desperately needed jobs.