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.
In summary, the Cold War began in 1945 and was a period of tension between the United States and Soviet Union. President Harry Truman fueled the fire by using the atomic bomb as leverage and issuing the Truman Doctrine to fund democracy in third world nations.