The correct answer is the contagion theory.
In the area of social sciences, the contagion theory refers to the process in which group influence or being part of a crowd has an almost hypnotic effect on individuals, making them behave in emotionally charged or irrational ways. In this instance, being part of a crowd influenced Carl to behave in ways atypical of his general calm and controlled behavior, demonstrating the contagion theory.
The correct answer is D. Enigma. The definition of this word would be a mysterios person, place or event. Something that is puzzling and that can not be understood or explained by the current knowlege. It does not mean that something is bad, it just means that it is unknown.
No it did not because they did not come and invade the u.s.a
Because the US was worried that Cuba was a beachhead of communism, and that the Cubans were too anti-american.