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.
Definition of the Cold War. The Cold War was a period of economic, political and military tension between the United States and Soviet Union from 1945 to 1991.Following the end of the Second World War, complications arose centering on the shifting of international power.n 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.