As the dominant power in the known world, the Daguo Empire sees itself as the center of the world, it's events, and ensure all of their subjects do the same. As such, the timeline starts with the crowning of their first Emperor.
The Naval Fleets of the Daguo Empire discovered what they considered little more than a backwater of an Archipelago that was easy takings. Given their superior technology and tactics, they were proved right-- it wasn't long until the entire region was formed into a new province of the empire.
In the span of 70 years, the Madu people sailed from their unknown corner of the world on discovery and trading expeditions-- changing the entire understanding of the Daguo-ren's understanding of the world and altering the course of history.
A bloody revolution ignited in 600 Imperial after perceived mismanagement of the ruling power, the war lasted for forty years. The ruling family-- known as the Shuwa Clan-- was executed by Akatsuki Rebels, forcing the Mainland of the Empire to send a massive fleet in retaliation to end this rebellion once and for all. What happened next was an unexpected, explosive finale to the conflict. As the ships approached on the horizon, hours from making landfall, a massive explosion annihilated the entire fleet at sea.
In retaliation for the execution of the ruling family of the province, the Daguo Empire sent a massive fleet to put an end to the rebellion of 40 years. The fleet never made it to shore, instead, it was consumed by a massive explosion that also unleashed a summer-long heatwave that caused great droughts for the entirety of the season. All the same, the Dawn Islands were free of Mainland influence now as this marked the end of the war.
When shipments from Silver Hold stopped coming in, the Silver Guard became concerned and sent a new Party of Adventurers to investigate. Dealing with the problem allowed this Party [Name will be Listed Here] to jumpstart their career.
After resolving the Silverhold Elemental Crisis, the founding heroes of the Adventuring Party are rewarded with official recognition as a legitimate Adventuring Company.