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	TongaReviewed	GrenadaReviewed	MozambiqueReviewed
Legal family	Common law with customary law	Common law	Civil law (Portuguese tradition)
System of government	Constitutional monarchy	Constitutional monarchy	Unitary presidential republic
Constitution	Act of Constitution of Tonga	The Grenada Constitution	Constitution of the Republic of Mozambique
In force since	1875	1973	2004
Capital	Nuku'alofa	Saint George's	Maputo
Official languages	Tongan, English	English	Portuguese, Makhuwa, Changana
Currency	Tongan paʻanga (TOP)	East Caribbean dollar (XCD)	Metical (MZN)
Population	105,000	126,000	33,900,000
Division of powers	Unitary. The Legislative Assembly legislates for the whole kingdom, and the island divisions of Tongatapu, Vava'u, Ha'apai, 'Eua and the Niuas are administrative districts headed by governors. Below that, town and district officers are elected under the Fakafekau'aki and District and Town Officers Act.	Unitary. The state comprises Grenada, Carriacou and Petite Martinique; Carriacou and Petite Martinique have a Ministry and local administration but no separate legislature.	Presidential system with a Prime Minister, a unicameral Assembly of the Republic, and a judiciary headed by the Supreme Court with a separate Constitutional Council and Administrative Court.
How law is made	Bills pass three readings in the Legislative Assembly and require the King's assent, which is a real rather than purely formal step. Ordinary bills need a simple majority. Amendments to the Constitution require a majority in the Assembly at three separate readings and the consent of the King and Privy Council, and clause 79 forbids any amendment affecting the law of liberty, the succession to the throne or the titles and hereditary estates of the nobles.	Bills pass three readings in both Houses and receive the Governor-General's assent. Constitutional amendments to entrenched provisions need a two-thirds majority in the House of Representatives and then approval by a referendum, a double lock that has defeated every reform package put to voters.	Bills are debated and voted by the Assembly of the Republic, then promulgated by the President, who may request constitutional review by the Constitutional Council before promulgation.
Legal profession	Law practitioners are admitted by the Chief Justice and licensed under the Law Practitioners Act, with the Tonga Law Society as the professional body. Most qualify overseas or at the University of the South Pacific. A practitioner working on land must know the Land Act's allotment system rather than general property law, because the constitutional bar on selling land means conveyancing in the ordinary sense does not exist.	A fused profession of legal practitioners admitted by the High Court under the Legal Profession Act, after a law degree and the Legal Education Certificate. The Grenada Bar Association represents practitioners.	Advogados admitted through the Ordem dos Advogados de Moçambique after a law degree and traineeship; técnicos jurídicos assist in lower 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.