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B. Do they could protect their interests from larger states.
"2. Are you writing naturally and academically?" would be the best option. The rest of the answers seem more like revisions to grammatical errors rather than the voice of the essay.
<span>"Federal" refers to a system in which all of the states are independent in a sense, and power is shared between the state government and national government. Therefore, "D" is the correct answer.</span>