|Principality of Arboria|
|Motto: Semper Dornan Fidelis|
|Largest city||Brunopolis, Aristarchus, AD Center, St. Christopher's|
|Official language(s)||Natspeak, Treesian, Babkhi, Universal|
|Official religion(s)||Bovinism, Treesian|
|- Prince||Esmeralda al-Osman|
|- Legislature||Council of Arboria|
The Principality of Arboria is a union of the demesnes of Arboria Proper, New Aquitane, Universalis, and Transegale situated within Natopia. Arboria began under its first prince, Iain de Vembria as a resurrection of Treesia and it soon accumulates many former territories of Treesia, Aerlig, and the Grand Commonwealth. Many of these territories have been lost after the legal declaration of Vembria's death and the passage of the Principality to Isabella Kalirion. Under her, it continued the Arborian tradition of amassing disconnected territories that fell under the personal control of Isabella Kalirion by various means. It is now governed by Isabella's daughter, Esmeralda al-Osman.
The 3rd Principate
Exasperated with the lackluster and moribund style of governance of the Council of Arboria (which had been rather benevolently left to their own devices since the death of Isabella Kalirion), under the guise of travelling for official ESB business, Esmeralda al-Osman took the long circuitous air route, via (Tapferite Airport) and (Istvanistani Airport), to make a surprise visit to Fort Nider, burst into the council chamber, and having introduced herself, commanded the issuance of a new Consensus of Government - which was promptly hand-delivered to the Natopian Emperor during the return refueling stop at Lindström.
Over the next few weeks, a series of Decrees of The Princess of Arboria in Council (issued on technically-Natopian soil, at the Imperial Embassy of the Natopian Nation at Astérapolis, Constancia) restructured the governments of the demesnes of the Principality, dissolved the sitting legislatures and popular assemblies, appointed new officials, and reminded the peoples of Arboria that Esmeralda was very much like her mother, Isabella.
Governance under the 3rd Principate
After the grant of assent and approval by the Emperor, the Council of Arboria was reconstituted on 24.XIV.1676, with the appointment of Joseph Meir, Chargé d'Affaires ad interim of the Imperial Embassy of the Bovic Empire of the Natopian Nation at Astérapolis; His Serene and Eminent Imperial Highness The Prince of Molivadia, Autokrator of Constancia, and Augustus Mirkdale, Vicegerent of Arboria as members of the Council.
Gunther Bauer was appointed representative of the Principality to the Frenzy.
Local Government under the 3rd Principate
After the adoption of the Consensus of Government of 1676, the Council of Arboria was reconstituted on 24.X.1676, and Augustus Mirkdale was appointed Vicegerent with plenipotentiary powers. A Decree of the The Princess of Arboria in Council bearing date 1.XV.1676, recognized The People’s Assembly at Saint Christopher’s, and the Council of Nobles of the Duchy of New Aquitane as institutions, and appointed Michael Maximillian Watson as plenipotentiary Lord Lieutenant over the Duchy of New Aquitaine. A Decree of the The Princess of Arboria in Council bearing date 1.XV.1676, confirmed previous decrees establishing a Board of Control, Board of Control for the Poor, Constituent Assembly, and Departments.
Elections were held for the Constituent Assembly, and The Constituent Assembly of Transegale was convoked on 5.II.1684.
On 15.XI.1695, the Princess of Arboria issued a Decree in Council  completely reorganizing local government in the Principality. This decree confirmed the provinces of the demesne as Transegale, Arboria del Sur, Mar Sara, and Arboria Proper, which was renamed to Northern Arboria. Each province was to be led by a Governor, assisted by a Vice Governor, and counseled by a legislature (Transegale Assembly, House of Representatives of Arboria del Sur, House of Assembly of Mar Sara, House of Delegates of Northern Arboria), while provincial capitals were designated in Brunopolis, Transegale; Isabellatun, Arboria del Sur; Augustgrad, Mar Sara; and Tirlar, Northern Arboria.
Law Enforcement and Local Justice System under the 3rd Principate
Military and Local Defense under the 3rd Principate
A 1654 Decree of the Council of Arboria procured by Natopian Minister of Security Isabella Kalirion appointed herself as Marshal-in-Chief of the Demesne Defence Forces, ordered total mobilization and of personnel and resources to meet the requirements of war. An order of battle for the same year listed nominal strength of 1,113 officers & 99,900 enlisted personnel, militia & ancillaries.
A rescript of the Council of Arboria bearing date at Fort Nider on the 10th day of Tasneber in the year 1658 ordained that the Reserve Force of the Demesne Defence Forces shall be re-designated as the Expeditionary Force and restored to its nominal established strength in anticipation of its deployment to secure the Demesne of Transegale on the continent of Tapfer.
Princess Isabella Kalirion, while in her capacity as Natopian Secretary of Defense, mustered a force consisting of Natopian citizens aged 16 to 65 and resident in Arboria and New Aquitaine of no more than 24,000 strong, later known as the Arboreal Volunteers. Recruits beyond that number were assigned to civil defense duties.
Comprising 16 regiments of militia, 20 squadrons of auxiliary combat support personnel, and 20 squadrons of trained weapons systems operators, the 40 squadrons were enrolled in and considered paid members of the Natopian Army, while the 16 regiments of militia were considered unpaid volunteers, but were given a weapon and a uniform.
The Transegale (Nautical & Maritime Provisioners, Victuallers, Wholesalers & Merchant Venturers) Trading (Derivatives, Dividends & Securities) Company of Brunopolis' trading as 'The Transegale Trading Company' is a major player in the economic and financial life of the Principality of Arboria. In 1699, discussions are ongoing with the Arborian Government on the entry and expansion of Entrepreneurship Services Bank to engage in lending and commercial services targeted to small and medium enterprises, particularly in Mar Sara.