Answer:
Before the American Civil War, Abraham Lincoln and other leaders of the anti-slavery Republican Party sought not to abolish slavery but merely to stop its extension into new territories and states in the American West. This policy was unacceptable to most Southern politicians, who believed that the growth of free states would turn the U.S. power structure irrevocably against them. In November 1860, Lincoln’s election as president signaled the secession of seven Southern states and the formation of the Confederate States of America. Shortly after his inauguration in 1861, the Civil War began. Four more Southern states joined the Confederacy, while four border slave states in the upper South remained in the Union.
Explanation:
Starting in 1939, any nation fighting in World War II could purchase goods and arms in the United States under the "Lend-Lease" program or act.
Countries such as Britain, China, the Soviet Union, Brazil among others received weapons under this program.
According to the Neutrality Act the U.S can not receive any compensation for the arms. Instead, they covertly were present in the war and defend its own interests by giving arms and other goods to the countries they specifically chose.
Fully associating to your representations for positive purposes.
Stepping back from your own mental map to get distance from emotionally charged representations.
Creating empathy.
Learning things by getting valuable insights into another person's map of the world.