What did edgar allan poe mean when he said a literary piece must create a unity of effect on a reader

D. That all aspects of the piece should work together to create a certain effect

To create a "unity of effect" on the reader, it should have a certain effect on the reader. Like a really sad and depressing book should not exactly make the reader sad, but to feel the parts of the book that spoke out to the reader. 

1. in creon’s first words to the chorus, what are the “storms” that threatened to destroy the ship of state?   polynices’ invation of the city with foreign armies was the “storms” eteocles and polynices decided to switch the crown every year, but after eteocles’ first year decided not to share it with polynices. polynices joined forces with foreign armies to invade the city and tried to take the crown from his brother, where he and eteocles killed each other   2. examine creon’s opening speech. what are his concerns? how does he feel about the city and its citizens? what are his motivations for banning the burial of polyneices? what would drive creon to place the concerns of the collective citizens over those of his family?   in creon’s opening speech, his concerns are to count on his citizens to rule. in addition, he wanted to give a clear message by not giving a proper burial to polyneices, if creon gave a proper burial to polyneices his people would think that he was an allied to the foreign forces that invaded the city and threatened the peace of his people.   creon placed the concerns of the collective citizens because he has no use for those who put individual concerns over the needs of his people 3. pay attention to creon’s speech at the beginning of the scene. what does creon think someone’s first loyalty should be and what comes second? do you think he is correct under some conditions? do you think he is wrong in some conditions? explain those conditions. creon thinks someone’s first loyalty should be with the concerns of the collective citizens and second comes our individual wants. i think he is correct because true loyalty takes place in the benefits of many not of a few.   4. what news is the sentry reluctant to deliver?   the sentry is reluctant to say that polyneices had a burial. 5. who does the chorus suggest might have done this?   the chorus suggests that the gods have done that 6. what is creon’s reaction and who does creon think is responsible? creon reacted abruptly and thinks it was a man who bribed his guard to bury polyneices