Answer:
Italy had the sharpest decline in immigration
Germany was the only county which increased from 1921 to 1929
One of the reasons why Iranian radicals took American hostages at the U.S. Embassy in 1979: the US government was providing medical care for the Shah and the iranians wanted to remove the existing iranian government, so it could not ally to the United States.
So, the correct answer is b)
A paper that talks about all of these topics could be titled "America's fear of communism, socialism, and anarchy after World War I."
All of the aforementioned events/people deal with fear felt by American citizens. For example, Sacco and Vanzetti were two Italian immigrants known for their political views. They believed in a society that had no government, also known as an anarchy. These two men were accused of, and later found guilty, of committing a murder. However, many individuals argued that they were found guilty not because of the evidence but rather the fact that they were anarchists.
The Palmer Raids were another result of fear towards a specific group. In this case, Attorney General Palmer raided the homes of 5,000 suspected communists. The goal was to uncover any plans to overthrow the American government. No evidence was found to support this conclusion.
The Zimmerman telegraph, was a telegraph from Germany to Mexico proposing an alliance in which Germany would give the land that Mexico lost to the United States if the Mexican people would fight the United States and keep them out of the war