Tyrran-Izero Resurgence Union

The Tyrran-Izero Resurgence Union was a political union based around the western region of Izir shortly following the events of the Legends of Tyrrus. The Union was an alliance between the Erdannian Empire, the Kingdom of Whytehold, the New Empire of Izero, and the Fadil dynasty of Alatheen, with its primary goal being the re-establishment of Izero as the foremost power in Izir, and the establishment of trade posts and settlements by Tyrranean colonists in Izir.
After Tyrrus was opened up to the world, the nations within quickly set about working out who in the world were going to be their friends and enemies. Having conquered Alatheen together, it was an easy assumption that Neo-Izero would be an ally to the Tyrranean powers. However, despite Izero's "right" to rule Izir, they lacked resources or any knowledge about the modern world. The Tyrranean powers were eager to aid Izero in achieving this, as they valued the Empire as their only ally in Izir, and an important buffer nation between Tyrrus and the slaving cartels and mercenaries who plagued the rest of the region.
Arguably the beginning of the Union was the establishment of the puppet King Khalif am-Fadil in Alatheen in 20.19. However it is generally agreed that the Union truly began in 20.28 when Emperor Saa III met with Queen Victoriana I of Erradan and High Marshal Theodoric Helmsgarr of Whytehold. The three world leaders set the Union into writing and the Emperor declared that the area between Izero and the sea to the south would be under the care and protection of the Tyrranean powers, within limits. Erdannia and Whytehold split this between them, Erdannia getting the coast and Whytehold getting the majority of the land. Nominally, the Empire of Izero still owned that land, but did not have the resources to protect it and so relied on their Tyrranean allies.
In response to this, the other cities and cartels of Izir began to discuss confederating against this western threat. Eventually they would do so under the reign of the authoritarian Grand Sultan Asagwara, in 20.60.
The Union collapsed shortly afterwards, in 20.70, after the death of Emperor Saa III. Erdannia and Whytehold had lost their former friendliness with one another, and were jealously eyeing each others territory. Rather than work to maintain the Union, they allowed it to collapse and begun minor hostilities. They also overreached the boundaries agreed upon with Izero.