Pregangliotic neurons of the sympathetic division of the autonomic system originate in the thoracic and lumbar (thoracolumbar) levels of the spinal cord and send axons to sympathetic ganglia, which parallel the spinal cord.
The great confrontation we came to call the Cold War had quite suddenly become the next stage of world history. What began in Iran in 1946 lasted for 45 years, until the dissolution of the Soviet Union in 1991.
President Harry S. Truman signs the National Security Act, which becomes one of the most important pieces of Cold War legislation. The act established much of the bureaucratic framework for foreign policymaking for the next 40-plus years of the Cold War. By July 1947, the Cold War was in full swing. The United States and the Soviet Union, once allies during World War II, now faced off as ideological enemies.