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.
History of the Cold War. The Origins of the Cold War are widely regarded to lie most directly in the relations between the Soviet Union and the allies (the United States, Great Britain and France) in the years 1945â1947. Those events led to the Cold War that endured for just under half a century. Events preceding the Second World War, and even the Russian Revolution of 1917, underlay preâWorld War II tensions between the Soviet Union, western European countries and the United States.