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	Marshall IslandsReviewed	PeruReviewed
Legal family	Mixed common law with customary law	Civil law
System of government	Parliamentary republic in free association with the United States	Unitary semi-presidential republic
Constitution	Constitution of the Marshall Islands	Political Constitution of Peru
In force since	1979	1993
Capital	Majuro	Lima
Official languages	Marshallese, English	Spanish, Quechua, Aymara
Currency	United States dollar (USD)	Peruvian sol (PEN)
Population	42,000	34,000,000
Division of powers	Unitary with strong local government. Each inhabited atoll has an elected local council with substantial authority over land use and local services, and the Council of Iroij, a body of twelve traditional leaders, reviews legislation affecting custom and land and may express its opinion to the Nitijela.	Unitary and decentralised, with twenty-five regional governments and the Lima Metropolitan Municipality holding elected councils and administrative competence. Peasant and native communities exercise jurisdiction within their territory under Article 149 in coordination with the justices of the peace.
How law is made	Bills pass the Nitijela and are signed by the President. Legislation affecting customary law, land tenure or traditional practice must be referred to the Council of Iroij, which may return its opinion to the chamber; the Nitijela may proceed regardless, but the referral is a required step. Constitutional amendments require either a two-thirds vote of the Nitijela followed by a referendum, or a constitutional convention.	Bills come from Congress, the executive, regional governments or citizens. A single chamber debates in committee and plenary; a second vote is required unless exempted. The President may observe a bill, and Congress insists by absolute majority. Constitutional amendment needs an absolute majority in two successive ordinary legislatures, or a two-thirds vote plus referendum.
Legal profession	Practitioners are admitted by the Supreme Court, and admission rules recognise United States legal qualifications, so much of the bar trained in the US. The Traditional Rights Court works differently: its judges are selected for knowledge of custom and traditional title rather than legal qualification, and proceedings there are conducted in Marshallese.	A law degree followed by a bachiller and título de abogado, then compulsory registration with one of the departmental colegios de abogados, which hold disciplinary power. Registration in one college permits practice nationwide. Notaries are a separate profession appointed by competitive examination.

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.