After the passage of the reconstruction acts, it was "military leaders" who took charge of the governments of the former confederate states temporarily, since the entire economy and social structure of the South was in a state of turmoil.
Congress established the Rural Electrification Administration which loaned money to electric utilities to build power lines, bringing electricity to isolated rural areas.
The ultimate effect was an end to the Cold War. The leader of Russia at the time Gorbachev enacting These social and economic policies resulted in the tearing down of the Berlin Wall, and many civilian protest in eastern bloc countries.