In what sense, if any, does the principle of fairness account for the political obligations of citizens in actual states?

In what sense, if any, does the principle of fairness account for the political obligations of citizens in actual states?
(In answering your question consider Nozicks and Simmonss neighbourhood examples. In what sense, if any, do individual neighbours have a duty to contribute? In what sense, if any, does Simmonss example illustrate a duty of fair play?)
Can find neighborhood examples in readings just command

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