The correct answer to this open question is the following.
Although the question does not provide options, we can say the following.
The syndrome is the Presidential assassination syndrome.
Lee Harvey Oswald was the material author of the assassination of US President JF Kennedy. He killed the President on November 22, 1963, in Dallas, Texas. The US federal governed opened the Warren Commission to investigate the case. Oswald was interrogated and after so many investigations, the commission stated that he was the only author of the assassination. But just a few believed this version, open to the idea of many conspiracies, including Cuban Communists, the CIA, and organized crime.
Organisms (belonging to the same species) may adapt in different ways to better exploit different environments or resources-- survival of the fittest. They also may evolve varied characteristics for attracting mates for reproduction. This means that different groups evolve differently. Over time, these groups or populations may become so different that they can no longer breed together -- and separate species are formed.
The Reconstruction era is always a challenge to teach. First, it was a period of tremendous political complexity and far-reaching consequences. A cursory survey of Reconstruction is never satisfying, but a fuller treatment of Reconstruction can be like quick sand—easy to get into but impossible to get out of. Second, to the extent that students may have any preconceptions about Reconstruction, they are often an obstacle to a deeper understanding of the period. Given these challenges, I have gradually settled on an approach to the period that avoids much of the complex chronology of the era and instead focuses on the “big questions” of Reconstruction.
However important a command of the chronology of Reconstruction may be, it is equally important that students understand that Reconstruction was a period when American waged a sustained debate over who was an American, what rights should all Americans enjoy, and what rights would only some Americans possess. In short, Americans engaged in a strenuous debate about the nature of freedom and equality.
With the surrender of Confederate armies and the capture of Jefferson Davis in the spring of 1865, pressing questions demanded immediate answers.
