The Imperial Schism

The Imperial Schism was an major historical event in the Galaxy as it was the beginning of the The Ashvanian Republic when it broke away from the Holy Ambrion Empire, which was the first time that the HAE had any form of rebllion/revolution.
Amelia Ashvania was the main leader during the Imperial Schism and was also a daughter of Lucius Ambrion which caused conflict within the royal family of the Holy Ambrion Empire.
Amelia was able to gain some support within the HAE and as such was able to muster a significant military force in order to at least have a chance at fighting a revolution against the HAE.
Unfortunately for Amelia, the HAE was too powerful and over the course of a few months, things looked bleak for the revolutionaries. Due to the looming defeat, Amelia and Lucius Ambrion met and fleshed out the Treaty of Unison to end the war, leaving the TAR as an independent nation to rule as it sees fit, as long as they do not go against the HAE and work together with the HAE to further its goals.