What specific challenges did south vietnamese face as they tried to flee vietnam

Hi their! The correct answer your looking for is:

Many of them fled to North Korea or China. Those who fled by boat were often in overcrowded and leaking boats.

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Survival was a big struggle. They had to go through dangerous territories, get on boats that could be overcrowded and many of them were often left behind. 

Is the essay common sense?

The main themes of the play are: fate and free will with the inevitability of oracular predictions is a theme that often occurs in greek tragedies the conflict between the individual and the state similar to that in sophocles’ “antigone” and   people’s willingness to ignore painful truths both oedipus and jocasta clutch at unlikely details in order to avoiding facing up to the inceasingly apparent truth and sight and blindness the irony that the blind seer tiresius can actually “see” more clearly than the supposedly clear-eyed oedipus, who is in reality blind to the truth about his origins and his inadvertent crimes.