The election of Abraham Lincoln.
Answer:
<h2>1: by promising aid to help countries avoid communist takeover.</h2>
Explanation:
The Truman Doctrine was first stated by US President Harry Truman to Congress in 1947. Truman said, "It must be the policy of the United States to support free people who are resisting attempted subjugation by armed minorities or by outside pressures." Essentially, the Truman Doctrine pledged American effort elsewhere in the world to check the spread of communist and Soviet influence. The policy was first put into action in 1948 by providing economic support to Greece and Turkey to stave off communist movement in those countries.
South America can be divided into three physical regions: mountains and highlands, river basins, and coastal plains. Mountains and coastal plains generally run in a north-south direction, while highlands and river basins generally run in an east-west direction.