Fleeing an overcrowded, environmentally cascading Earth, hundreds of millions leave and begin the colonization of the solar system at large.
Ten ark ships are launched to ten different systems, but would not arrive at their destinations for centuries in the future, if ever.
Tensions boil over and war breaks out between the major powers of the solar system. It's a long, and grueling war, one that many fear will be the end of all life in the solar system.
In the aftermath of the Solar War, the various powers of the solar system decided that a unified central government, in the tradition of the United Nations before it, should be created to govern and regulate everything within, and eventually without, the solar system.
With true FTL at its disposal, humanity spread far and wide across the cosmos, with or without the support of the GTR. Dozens of worlds were surveyed and colonized within mere decades.
At the height of the Schism Wars, without warning navigation of the Collapse became impossible. Ship sensors went blind, and without a bearing emergency reemergence into real space was executed in thousands of ships across the galaxy. For some, they reemerged close enough to a habitable system that they were able to safely make their way to port. For most, they found that they were hundreds, if not thousands, of light-years from the nearest port. Some attempted to guess their way through the Collapse. Few ever returned from their journeys, tens of millions lost to the void, their final fates most likely to remain a mystery for all time.
An armada of military ships exits the Collapse into the Alpha Centauri system, broadcasting a message from a woman calling herself the Torchbearer, the first of her kind and chosen by fate to lead mankind out of the dark ages and into a new age of light, as one unified people. She's the first person able to navigate the Collapse without technological aid, and begins a campaign to retake every system under the Terran banner.