Comparison

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Because every portal follows the same fifteen-section outline, the comparison is genuinely like-for-like rather than a collage of whatever each government happens to publish.

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Comparison of selected legal systems
Attribute	MonacoReviewed	MicronesiaReviewed	Holy See (Vatican City)Reviewed
Legal family	Civil law	Mixed common law with customary law	Canon law and civil law
System of government	Constitutional hereditary monarchy	Federal republic in free association with the United States	Ecclesiastical elective absolute monarchy
Constitution	Constitution of the Principality of Monaco	Constitution of the Federated States of Micronesia	Fundamental Law of Vatican City State
In force since	1962	1979	2023
Capital	Monaco	Palikir	Vatican City
Official languages	French	English, Chuukese, Pohnpeian, Yapese, Kosraean	Italian, Latin
Currency	Euro (EUR)	United States dollar (USD)	Euro (EUR)
Population	39,000	115,000	800
Division of powers	A unitary state of about two square kilometres with a single commune. Legislative power is exercised jointly by the Prince and the National Council; executive power belongs to the Prince, exercised through the Minister of State and the Government Council; judicial power is delegated by the Prince to the courts, with the Tribunal Suprême acting as both constitutional and supreme administrative court.	Genuine federalism. The national government holds foreign affairs, defence, immigration, currency and interstate commerce; everything else, including land tenure, is state or local. Each state has its own constitution and supreme court, and Yap's constitution creates Councils of Pilung and Tamol — traditional leaders' councils with power to disapprove state legislation affecting tradition and custom.	Power is concentrated in the Supreme Pontiff, exercised through the Pontifical Commission for Vatican City State (legislative), the Governorate (executive) and the Vatican tribunals (judicial).
How law is made	A bill may be initiated by the Prince or proposed by the National Council. Government bills are laid before the Council, examined in committee and voted; adoption requires the agreement of both the Prince and the Council. The Prince then promulgates the law by sovereign ordinance and it is published in the Journal de Monaco.	Bills pass Congress and are signed by the President, who has a veto that Congress may override. Because the four at-large senators serve longer terms and are the pool from which the President is drawn, national politics is structured around balancing the states rather than around parties — there are no formal political parties. Constitutional amendments may be proposed by Congress, by a convention, or by popular initiative, and require ratification by three-quarters of the voters in three of the four states.	Laws are prepared by the Pontifical Commission and take effect with the Pope’s approval, published in the Acta Apostolicae Sedis supplement.
Legal profession	A small bar of avocats-défenseurs, avocats and avocats stagiaires, organised as the Ordre des Avocats, with admission requiring Monegasque nationality preference, a law degree and a traineeship. French avocats may appear in specified circumstances. Notaries are appointed by sovereign ordinance and are few in number.	Admission is to the FSM Supreme Court, with rules that recognise foreign qualifications, so many practitioners trained in the United States. A distinctive feature is the trial counselor: a non-lawyer licensed to appear in certain courts after examination, which is how most representation is delivered outside the main centres. Practitioners must often hold admission both nationally and in the relevant state.	Advocates are enrolled with the Vatican tribunals; canon lawyers (canonists) practise before ecclesiastical courts.

A comparison table flattens nuance by design. Where a difference matters to a decision you are making, open both portals and read the section in full — the constitutional detail behind a one-line summary is often the part that governs the outcome.