Comparison

Read two legal systems against each other

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	VietnamReviewed	LithuaniaReviewed
Legal family	Common law with customary law	Socialist civil law	Civil law
System of government	Constitutional monarchy	Socialist one-party republic	Unitary semi-presidential republic
Constitution	Act of Constitution of Tonga	Constitution of the Socialist Republic of Vietnam	Constitution of the Republic of Lithuania
In force since	1875	2013	1992
Capital	Nuku'alofa	Hanoi	Vilnius
Official languages	Tongan, English	Vietnamese	Lithuanian
Currency	Tongan paʻanga (TOP)	Vietnamese dong (VND)	Euro (EUR)
Population	105,000	100,300,000	2,860,000
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. 63 provinces and municipalities have People's Councils and People's Committees which administer within a centralised framework, and Hanoi, Ho Chi Minh City and several others have special statutes granting limited additional autonomy. There is no constitutional division of legislative competence.	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.
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.	The National Assembly meets twice yearly and enacts laws by majority; between sessions its Standing Committee issues ordinances. Drafts are prepared by ministries, reviewed by the Ministry of Justice and published for comment. The President promulgates. Most operative detail arrives later in implementing decrees and circulars, so a law's effect frequently cannot be determined from the statute alone — a practical point the topic entries flag.	Bills are adopted by the Seimas and signed by the President, who may veto and return a bill for reconsideration.
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.	Lawyers are members of the Vietnam Bar Federation and provincial bar associations, admitted under the Law on Lawyers after a law degree, the professional training course at the Judicial Academy, a twelve-month apprenticeship and the bar examination. Foreign law firms may establish branches and subsidiaries and advise on Vietnamese law only through licensed Vietnamese lawyers, and may not appear in court.	Advocates belong to the Lithuanian Bar Association; notaries handle property, company and succession formalities.

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.