This is called free trade. Free trade occurs when there are relatively few tariffs imposed on countries for the importation of goods. Completely free trade in this sense, however, is rare.
The goal was to stop the spread of Communism.
(Look into Domino Theory.)
The fear of the nuclear war between the two superpowers and the spread of communism in Europe and Asia.
President Lincoln demoted McClellan because C. McClellan failed to defeat Lee at Antietam Creek. McClellan also failed to pursue Lee after the Battle of Antietam despite Lincoln's commands.
