Great Theddite Succession Crisis

The Lobancas Split, also known as the Great Theddite Succession Crisis, is the name given to the division of the First Theddite Empire between Nisemicas V of Theddias, Lastilas of Lobanc, and Atsicras of Osthedia, following the premature death of their father, Emperor Nisemicas IV Lobancas, at the hands of Osthedian separatists. This crisis led to the independence of Osthedia from the rule of West Theddites, Nordish conquest of many Theddite cities, and the creation of the Second Theddite Empire.

Background
Following their decisive defeat in the 15985 Second Subdelian-Theddite War, the Empire was forced to cede much of the Transtheda province, all lands to the east of the river Thedda and west of the river Delion. This came after multiple centuries of increasingly frequent revolts and bouts of unrest across the empire, and for many--especially those in the far eastern reaches of the realm--the shortcomings of imperial rulers became too much to tolerate. Disdain for the emperor grew sharply, not only in the east but all over his domain. Many groups, such as workers' guilds, political groups, local governments, and militias either began to support regional autonomy or advocate for complete independence. Their target was, most often, Nisemicas IV himself, who was unfortunate enough to have been coronated only a few months before the war with Subdelia. For his entire reign, he was viewed without fail as the worst emperor in recent memory, and perhaps the worst in the entire long history of Theddia. Nisemicas IV did his best to calm his many opponents, attempting to reform the imperial bureaucracy and partially decentralize the government, although these attempts were never enough to sway public opinion. As part of his decentralization, he gradually divided his administrative responsibilities between his three sons: Nisemicas V, the oldest and informal heir to the throne, presided over the provinces of Theddias, Antilovoltias, and Nordesthil, the central third of the empire. To Atsicras, his second son, he delegated the matters of the eastern provinces; Arapovoltias, Arapostheda, and Antilostheda. Finally, his youngest son, Lastilas, was allowed to oversee the western third, made up of Nord-Bas, Suthebas, Prienithedas, Terpiosi, and Flittias provinces.