The Karno-Ruthenian Empire consists of several constituent states, the largest of which is the Kingdom of Ruthenia. These states were once independent micronations and were joining the Empire through treaties of personal union and ultimately, joining the Empire with the commitment to submit to his suzerainty. These associated states have a high degree of autonomy under the terms of the Imperial Constitution, but are subject to interference of the Imperial and Royal Council and the Emperor-King himself, who despite being the direct ruler of most of the Empire, has influence in other regions.
From 20 February 2017, after the Imperial Decree n. 078-2017 enters into force, the first protectorate of the empire, the Principality of Nossia was created. Despite the relatively peaceful period, the principality chose to maintain its independence through a referendum held on 16 March 2017, the result of which was recognized by the Emperor-King of Karnia-Ruthenia the following day. The Principality of Carpathia was reunited to the Empire on 22 June 2017, following the Treaty of Gretzenmarcher and raised to the status of Kingdom on 02 August 2017. On 06 February 2018, due the Treaty of Hakodate, the Empire established the first concession of its history, the Karno-Ruthenian Concession in Hakodate, that would later be merged to Cardonia. On 16 August 2018, was signed the Treaty of Saint Michael of Socotra, in which it was agreed that the Empire of Lemuria would deliver the sovereignty over Socotra to the Empire, becoming the first imperial protectorate. The Lateran State, Carpathia and Letzembourg would become independent on 2021.