The Truman Doctrine was the event that triggered off the Cold War.
Explanation: Both parties were mutually hostile and did not believe in a possible peaceful coexistence anymore. The Americans and Soviets’ hostility to each other as well as the belief that they could no longer cooperate after the start of the Cold War resulted in the Berlin Blockade. Thus, I can conclude that the Truman Doctrine marked the start of the Cold War.
School, Work till 50 then retire
Many people who were no longer servants or slaves found a new life of a ranch work and independence in the Far West.
During the Civil War, "Copperheads" referred to B. NORTHERN SUPPORTERS OF THE CONFEDERACY.
The Copperheads were those vocal democrats located in the Northern United States of the Union who were opposed to the American Civil War. They wanted to have an immediate peace settlement with the confederates.
The Republicans were the ones who called these antiwar democrats "copperheads"; likening them to the venomous snake.
The answer is C. Otters live in cold water, eat mostly fish, and float on their backs.