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	BotswanaReviewed	NamibiaReviewed	ComorosReviewed
Legal family	Common law with customary law	Mixed Roman-Dutch and English common law	Mixed Roman-Dutch and English common law	Mixed French civil law and Islamic law
System of government	Constitutional monarchy	Parliamentary republic	Semi-presidential republic	Federal presidential republic
Constitution	Act of Constitution of Tonga	Constitution of Botswana	Constitution of the Republic of Namibia	Constitution of the Union of the Comoros
In force since	1875	1966	1990	2001
Capital	Nuku'alofa	Gaborone	Windhoek	Moroni
Official languages	Tongan, English	English, Setswana	English	Comorian, Arabic, French
Currency	Tongan paʻanga (TOP)	Botswana pula (BWP)	Namibian dollar (NAD)	Comorian franc (KMF)
Population	105,000	2,680,000	2,600,000	850,000
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. Districts and sub-districts administer central policy, and the House of Chiefs (Ntlo ya Dikgosi) is an advisory chamber that must be consulted on bills affecting customary law, tribal organisation and tribal property.	Unitary with 14 administrative regions and elected regional councils, which also constitute the National Council, the upper chamber. Traditional authorities exercise recognised functions over communal land and customary law.	Federal. Grande Comore, Anjouan and Mohéli each have a governor and their own assembly with substantial autonomy over local administration, while the Union handles defence, currency, foreign affairs and nationality.
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 are introduced in the National Assembly, take three readings with committee scrutiny between the second and third, and go to the President for assent. Bills affecting customary law, tribal property or the organisation of the tribes must first be referred to the Ntlo ya Dikgosi for its opinion, though that opinion does not bind the Assembly.	Bills pass the National Assembly through three readings, then go to the National Council for review. The Council may confirm, propose amendments, or object; the Assembly can override an objection by a two-thirds majority. The President then assents, and constitutional amendments require two-thirds of both chambers and may never diminish the rights chapter.	Bills originate with the government or members of the Assembly of the Union, are examined in committee and passed by the Assembly, then promulgated by the President. Matters within island competence are legislated by the island assemblies, and disputes over the boundary between Union and island competence are a standing feature of Comorian constitutional practice.
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 attorneys admitted by the High Court after a recognised law degree and articles of pupillage; there is no split between advocates and attorneys, and the Law Society of Botswana regulates practice.	A fused profession under the Legal Practitioners Act: a single class of legal practitioner is admitted after a law degree and the Justice Training Centre's postgraduate course, and the Law Society of Namibia regulates practice.	A small bar of avocats admitted after French-model legal training, supplemented by qadis who require religious-law qualification for the personal-status jurisdiction; many practitioners train in France or Madagascar.

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.