Answer: Carter lost popularity over the Iranian crisis because many Americans felt his response to the crisis was slow and indecisive. Many felt he did not harness the power of the US to effectively address the crisis
Explanation: Carter's response to the crisis led to his defeat in 1980 by Ronald Reagan.
The list that is their is the answer
d) It allowed popular sovereignty to decide the slavery issue
The answer would be "The battle of the Bulge". This is also the largest Ardennes Offensive which was the largest battle fought on the Western Front in Europe.