Alexandrian Flu
The Alexandrian Flu was an unusually potent, Micras-wide influenza pandemic in (date) that resulted in the collapse of the Empire of the Alexandrians as a sovereign state and an independent political entity.
Backgrounder
There was a prior episode of a similar nature, which the Empire of the Alexandrians was able to recover from. This is documented in Alexandrian history.
Hypothesis and source
The same disease unleashed by the Nameless in Hamland that wiped out everyone in the country except for a small 2% of the original population prior to the Hammish Civil War spread to Alexandria when the peacekeepers came home. The disease wiped all of Alexandria out pretty much overnight. This disease, despite starting in Hamland, is called the Alexandrian flu.
Spread
The modern conveniences of international airline travel - of which Cibolan Alexandria was a major transit hub - exacerbated the spread of the Alexandrian flu to Alexandrian offshore territories such as Terrenoire, Leifgrad, Luthoria and Anglien.
Aftermath and Legacy
Consul for Defense Jaime Augustin Joaquin Primo de Aguilar initially attempted to establish a government-in-exile at Palais de Saint Louis le Protecteur, the Imperial Alexandrian Embassy in Haraldsborg, in the High Realm of Stormark, in accordance with Article 5 of The Regency Act 2014, but the pandemic was too virulent for the remainder of the Alexandrian government to react and respond in time. Some officials, such as Third Consul Juana Beazcoetxea Hernández and Rear Admiral Helena Chevalier were able to escape, to Natopia and Shireroth respectively, while Primo de Aguilar fled to Constancia. The fate of the members of the Imperial House is unknown.
The Frenzy of the Bovic Empire of the Natopian Nation unanimously adopted a resolution directing and commanding the Imperial Natopian Government to grant Natopian citizenship to Alexandrian refugees who had fled to asylum in Natopia.
When the Empire collapsed, many Alexandrians (approximately 10%, or some 36,000,000) that survived out of the 360 million that lived throughout the Empire, went to Natopia. Almost 90% of them settled in the Natopian demesne of Thalassa.