Mega Semos

Mega Semos (Μέγᾰ Σήμος) is an irredentist concept which refers to Semivian settlements beyond their ethnopolis at Semos, especially in Western Semolis. The territories which are traditionally regarded as part of the wider Semolis region include the city of Semos, the ruins of the (unnamed pseudo-Albanian) civilization, and Western Semolis, a territory now referred to as the Burnt Hills under Tenuvian occupation.
Semos began founding colonies in Western Semolis shortly after the Exodus. They were joined by the sub-group of Sloveny who would develop into the Juzhosloveny. The two nations would form an alliance in genociding the (pseudo-Albanian) civilization, who had founded their ethnopolis in territory which both the Semivians and Sloveny considered to be rightfully theirs. As the power of the Sloveny expanded after conquering the Baltos, Hayonids, and Yazigs, Semos was broached to voluntarily join the nascent Satemid Empire under relatively favorable terms, in which they would govern themselves in an autonomous Sarovat known as Semivsk, the borders of which would include Western Semolis.
However, during the Great War, this region marked a borderland not just between Tenuvium and Semolis, but between the Foederatio of Centum and the Satemid Empire and was utterly devastated by ground fighting in which all settlements were raised to the ground. The blockade and eventual capture of Semos forced the Satemids to sue for peace, as an occupied Semos could in turn blockade the Satemids' only warm-water ports. Under the terms of the peace treaty Semos was forced to join the Foederatio of Centum, but Western Semolis was ceded to be directly governed by Tenuvium.
These terms are considered to have been especially disgraceful by the Semivians who saw the ceding of their territory as a Satemid betrayal, and Semivian nationalists continue to refer to the Burnt Hills as Mega Semos. Dissidents under the tyranny of Spergo seek to revive the concept of Mega Semos and renew their claims over the territory. Spergo is paid directly by the Foederatio of Centum to keep these extremists in line.
=== Behind the scenes ===
The concept of Mega Semos is inspired by the real-world "Megali Idea" (Μεγάλη Ιδέα), which is a nationalist and irredentist concept that expresses the goal of reviving the Byzantine Empire, by establishing a Greek state, which would include the large Greek populations that were still under Ottoman rule after the end of the Greek War of Independence. The notion came to renewed prominence over the proposed enosis between the Greek and Cypriot state, prior to the invasion of Turkey.
The name also derives from the Greek form of Magna Graecia, which is Megálē Hellás (Μεγάλη Ἑλλάς) meaning "Great Greece." The concept of a "great(er)" country is a common irredentist trope; see Greater Serbia (Velika Srbija).