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	LithuaniaReviewed	YemenReviewed
Legal family	Common law with customary law	Civil law	Mixed (Islamic law and civil law)
System of government	Constitutional monarchy	Unitary semi-presidential republic	Republic with contested authority
Constitution	Act of Constitution of Tonga	Constitution of the Republic of Lithuania	Constitution of the Republic of Yemen
In force since	1875	1992	1991
Capital	Nuku'alofa	Vilnius	Sana'a (constitutional); Aden (interim seat of government)
Official languages	Tongan, English	Lithuanian	Arabic
Currency	Tongan paʻanga (TOP)	Euro (EUR)	Yemeni rial (YER)
Population	105,000	2,860,000	34,400,000
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.	Semi-presidential government with a directly elected President focused on foreign and security policy, a Government answerable to the Seimas, and a separate Constitutional Court.	Nominally unitary with twenty-two governorates and appointed governors, and a 2000 local authority law providing for elected local councils. In practice territorial control is divided between rival authorities, and the 2015 draft federal constitution proposing six regions was never adopted.
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 adopted by the Seimas and signed by the President, who may veto and return a bill for reconsideration.	Under the constitution, bills are passed by the House of Representatives and ratified by the head of state, with publication in the Official Gazette. Since 2014 this process has not operated normally: the recognised government legislates largely by decree from Aden, and the Houthi authorities issue their own instruments in the areas they control. Determining the applicable rule in a given place and period is a factual question, not merely a legal one.
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.	Advocates belong to the Lithuanian Bar Association; notaries handle property, company and succession formalities.	Advocates are licensed under the Advocacy Law and organised in the Yemeni Bar Association, which has continued to operate and to make representations about judicial independence throughout the conflict. Judges are trained at the High Judicial Institute and appointed by the Supreme Judicial Council, but appointments made by rival authorities since 2014 are not mutually recognised. Legal aid is minimal and provided mainly by non-governmental organisations.

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.