What were the lasting effects of the National Labor Relations Board, the Tennessee Valley Authority, the Federal Deposit Insurance Corp. and the SEC?SEC is the Securities And Exchange Commission
That's a very large question with lots of parts, so let me get you pointed in the right direction.
The TVA was instrumental in creating thousands of construction jobs as a network of dams were put up in the Tennessee Valley. They controlled erosion, provided reliable irrigation water and electricity to rural areas. So this was an employment plan mostly with extra benefits that were long lasting, and still felt today.
The FDIC and SEC were reform programs aimed at avoiding future bank closures (FDIC) and regulating the excesses of the stock market (SEC) so that we could prevent future depressions from happening. They are still in use today, and while the SEC is mostly toothless, the FDIC has been instrumental during this recession in keeping consumer confidence in banks and preventing the system from collapsing as it did in the 1930's.
The NLRB was established to maintain working relations between unions and management, since after the Wagner Labor Relations Act, all Americans were finally granted the right to collectively bargain. The NLRB is still around today.
These programs had different goals and results, but all were part of the New Deal response to the Great Depression under Franklin Roosevelt.