Earth's first contact
In the 2020es, the future didn't look too well for the human race. The much-touted technological singularity was not there yet, and humanity was still confined to a single planet with rapidly-dwindling resources. That the third world war had not happened either was small consolation.
Nobody knows exactly how the shock of the contact could trigger something as serious as the Long Fall, but it did. In the span of a few moths, most of the Western governments failed, the global economy collapsed and all kinds of smaller powers and factions went on the offensive, reaching for a piece of the pie.
Horrified at the result of their visit, the Mythians withdrew, but it was too late.
It is difficult to tell when the war actually ended, as there was no victor, and no peace treaty. The 2040es saw the survivors slowly rebuilding an economy. Governments begun to reform as well, but the true power was now in the hands of those who made the society tick: the private companies. But this new order was facing a problem.
Now, with the end of consumerism, humanity still had time. Space programs flourished. Soon, people were living everywhere inside the solar systems' asteroid belt, or else experimented alternate lifestyles... and hoped.
At first, no one seemed to notice the consequences of this effort. Pressured by financial constraints, companies had merged one after another, until the whole planet was dominated by one entity known simply as the Corporation. And even with the imports from space, the Earth could not sustain its billions any longer.
Enter the Cyberland movement. Driven underground by public outrage 15 years earlier, the proponents of man-machine integration (read: cyborgs) became the ideal recipients of a Mythian mission carrying the means to build a hyperdrive. Working in secret, they managed to build a faster-than-light colony ship and leave the solar system in 2077, not before broadcasting the documentation to everyone else.
The Triangle era
Twenty years later, the Terrans (as they became known) were exploring the galaxy in earnest, in the process making the first exchanges with their nearest neighbors, the Rivoli and the Caino. The area between the three homeworlds? had plenty of Earth-like planets; soon, colonists began to pour out in ever-better starships. Which led to a new problem.
All three species were competing for the same worlds.
For half a century there was a furious race for the most resource-rich star systems; as the technology level increased, so did tension. A new contender also appeared during this time: a young race of cyborgs who called themselves Cyblans.
It would seem that a dozen worlds should be enough for anyone, but most planets are not as welcoming as, say, Earth. Notably, most of them cannot sustain as much population... and populations have a tendency to grow. By 2150, the Triangle? was a crowded place; diplomacy meant nothing to the local militias, and once the fighting started, the homeworlds were compelled to aid their colonies.
The golden age of Mega
This particular war didn't last long. The three parties involved decided it was after all cheaper to join forces in further exploring the galaxy. From then on, the name of Triangle carried a new meaning. Countless missions, many of them private, were sent around the Mythian area of influence. It was during these years that exotic worlds like Euphoria? were colonized. And it was during these years that Triangle scouts reached an obscure planet used by Mythians, Tsheia and Sulhru as a stepping stone in their long range explorations.
The Terrans called it Mega. In a generation, the arid globe became the main hub of the known galaxy. In another generation, it achieved political independence. But while the economy kept growing, the natural resources did not. Soon, the young government had to direct the continuous flow of immigrants towards other worlds.
The Kinac Wars
By the time Centerra was founded, merchants from the Kinac Empire already had extensive connections within the Megan Space. Another commercial outpost could not harm. Unfortunately, the Kinac government took the human presence to be a threat. On June 17, 2276 Earth time, the 33rd Imperial Starfleet launched an all-out attack on the ships massed at Centerra. The crews fought valiantly, but their civilian vessels, however rugged, were no match for actual warships.
That in itself would not have triggered a war, but for the Solar Corps? battle group who responded to the distress calls. The Empire deemed their subsequent engagement of the Kinac fleet to be a provocation. In a few short weeks, they annexed Unaan?, addressed an ultimatum to the Tsheia and finally attacked Mega itself. All thanks to a new invention, the star catapult?, which allowed them to send ships at great distances, much faster than the built-in star drives would have allowed.
While the Megans fought off a Kinac invasion force, a surprised Triangle government faced a large scale assault on their poorly defended exterior colonies. Through the advantage of numbers, the Imperial forces were able to advance all the way to Rivol and Caino.
In the battles that followed, the unexpected involvement of Cybl and some newly-fielded Triangle warships were decisive. The Kinac were pushed back star system by star system. Meanwhile, with Tsheia assistance, Mega had repelled the invasion, so the Kinac fleets had to regroup close to their old border. But the Triangle did not have the resources to take advantage of the situation; it was a stalemate.
Four years into the war, both the Sulhru and the Mythians were still neutral, as the Kinac had been careful not to provoke them. Then the Terrans devised a very simple plan: they would launch a series of attacks on Sulhru and Mythian worlds using captured Imperial ships. It worked, but only after a series of massacres that caused outrage on the two homeworlds. While the Sulhru forces liberated Unaan, the Mythians took their time to field a new generation of warships they had been developing for some time. In less than six months, the imperial fleets found themselves fighting on two fronts while being badly outgunned. They still had the advantage of numbers, though, and put up a fierce resistance.
The second half of the war was grim and bloody, with the Kinac fighting for every insignifiant colony and the Megaspace forces struggling to maintain some sort of supply lines. But the imperial fleets were constantly pushed back. When the onslaught reached the capital world, the Empire's fate was sealed.
The new expansion
The Kinac Wars ended officially when the Emperor took his own life. By that time, a third of the 19 province homeworlds were under occupation, including the imperial capital. Most of the others promptly proclaimed their independence. The few that remained signed a peace treaty in the name of the "New Empire".
Meanwhile, rogue Kinac fleets continued to roam the former imperial space and the neighbouring Megan Expanse?. Years later, they had not been rooted out completely. Still, colonies in the area developed at an accelerated pace and scouts were tentatively sent beyond the Kinac space. The Sulhru sold their jump drive? technology to the Megans, making for even more diversity in civilian shipbuilding.