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	OmanReviewed	LithuaniaReviewed	IndonesiaReviewed
Legal family	Mixed (civil law and Islamic law)	Civil law	Mixed civil, customary and Islamic law
System of government	Unitary absolute monarchy	Unitary semi-presidential republic	Presidential republic
Constitution	Basic Law of the State	Constitution of the Republic of Lithuania	Constitution of the Republic of Indonesia 1945
In force since	1996	1992	1945
Capital	Muscat	Vilnius	Jakarta
Official languages	Arabic	Lithuanian	Indonesian
Currency	Omani rial (OMR)	Euro (EUR)	Indonesian rupiah (IDR)
Population	4,600,000	2,860,000	281,600,000
Division of powers	Unitary. Eleven governorates headed by appointed governors, with municipal councils holding advisory functions over local services. No legislative competence exists below the national level.	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.	Unitary but heavily decentralised since the 1999 regional autonomy laws, which devolved most service delivery to some 500 regencies and cities rather than to the 38 provinces. Aceh, Papua and its successor provinces, Yogyakarta and Jakarta hold special autonomy statuses with distinct arrangements — Aceh includes Sharia jurisdiction and its own political parties; Yogyakarta's governor is hereditary.
How law is made	Draft legislation is prepared by ministries and the Council of Ministers, may be referred to the Council of Oman for review, and takes effect on the Sultan's signature and publication in the Official Gazette. The Majlis al-Shura may propose legislation and question ministers, and its role was modestly strengthened after 2011, but it cannot enact or block a royal decree.	Bills are adopted by the Seimas and signed by the President, who may veto and return a bill for reconsideration.	Bills may originate with the DPR, the President or the DPD on regional matters, and require the agreement of both the DPR and the President — a genuine joint enactment rather than assent. Once approved the President promulgates; if he does not, the bill becomes law after 30 days. The Constitutional Court may then annul it. The 2020 Job Creation Law was found conditionally unconstitutional for defective process, which forced the enactment of a new law on legislative drafting.
Legal profession	Advocacy is regulated by the Ministry of Justice and Legal Affairs; Omani nationality is required for rights of audience, and foreign lawyers practise as consultants within licensed firms. Pleadings are in Arabic. Judges are appointed by royal decree on the recommendation of the Supreme Judicial Council. Notarisation is required for real property dispositions, and land registration is administered by the Ministry of Housing and Urban Planning.	Advocates belong to the Lithuanian Bar Association; notaries handle property, company and succession formalities.	Advocates are admitted under the Advocate Law 2003 after a law degree, a professional course, the bar examination and two years' apprenticeship, then sworn in by a High Court. PERADI is the principal bar association, though the profession has been divided by competing organisations, and the Constitutional Court has held that multiple bars may coexist while a single body administers admission. Notaries are a separate regulated profession with exclusive competence over deeds of incorporation and land transfers.

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.