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Australian law is based on the English common law system, with laws primarily made by state and federal parliaments. Australia is a federation, meaning power is divided between the federal government (responsible for defense, foreign policy, immigration, etc.) and state governments (responsible for justice, education, health, etc.). The High Court of Australia resolves constitutional disputes.12

Elections are compulsory for citizens aged 18 and over, using a preferential voting system for the House of Representatives and proportional representation for the Senate. Each state has its own parliament and legal system, culminating in a Supreme Court, with appeals possible to the High Court. Local governments also exist, with powers granted by state legislation.3412

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