Metaphor, simile, repetition, parallelism and alliteration. What fits each sentence:

Many lessons need to be learned from Hurricane Katrina

we are one nation but separated according to race and class

we are one nation but separated according to advantaged and disadvantaged

we are one nation but separated according to power and struggle.

To determine which literary device fits each sentence, we can look at the characteristics of each device and match them with the sentence that aligns most closely with those characteristics. Let's analyze each sentence:

1. "Many lessons need to be learned from Hurricane Katrina."

This sentence does not contain a direct comparison or repetitive elements. Instead, it conveys the idea that there are important lessons to be derived from Hurricane Katrina. Therefore, this sentence does not fit any of the given literary devices.

2. "We are one nation but separated according to race and class."

This sentence compares two contrasting ideas: the unity of being "one nation" and the separation based on "race and class." The phrase "but separated" acts as a contrasting element, resulting in a metaphorical comparison. Therefore, the literary device that fits this sentence is a metaphor.

3. "We are one nation but separated according to advantaged and disadvantaged."

This sentence shares the same structure as the previous one, but the contrasting elements are "advantaged and disadvantaged" instead of "race and class." Again, the phrase "but separated" creates a metaphorical comparison. Therefore, the literary device that fits this sentence is also a metaphor.

4. "We are one nation but separated according to power and struggle."

Similar to the previous sentences, this one follows a contrasting structure, comparing the unity of being "one nation" with the separation based on "power and struggle." The phrase "but separated" creates a metaphorical comparison. Consequently, the literary device that fits this sentence is once again a metaphor.

To summarize:

- Sentence 1: No specific literary device applies.
- Sentence 2: Metaphor (race and class).
- Sentence 3: Metaphor (advantaged and disadvantaged).
- Sentence 4: Metaphor (power and struggle).