The Resurgent Series
Thousands of years in the future, erosion uncovers the buried body of Met in the eastern slopes of the Canadian Rockies where she crashed when the moon and the World Ring and the Starbridges fell, and with them human civilization. Now with air to breath again, the nanotechnology in her body restores her to life, but like Xio and Kron before her, her memories are slow to recover. She has no idea who she is, or when or where she is, only the vaguest memory that she was looking for someone, trying to save someone, her lost love — Xio. Seeing an arc of light in the sky and feeling drawn to "where it meets the Earth", she follows it eastward into the fertile grasslands that were once the Canadian tundra, until she meets a tribe of primitive farmers living in and around the ruins of what was once a vast suburban sprawl, patched up with far more primitive worksmanship than it was originally built with. They are friendly and welcome her, and she stays with them for a time, learning something about the world. The ring in the sky, which she thought was some kind of structure — the World Ring, which would lead her to a Starbridge, where she would find Xio, though she doesn't remember it that clearly — they call the Rings of Fenrir; the rings of debris left from the destroyed moon. They suggest sending her south with the next convoy of traders from a larger settlement on the shores of the Missipi Sea, which they show her on a map that looks very wrong to her, depicting a vast inland sea stretching up from the south into what she thought was more grasslands. But before that can happen, the small community is attacked by soldiers from something called the Redstone Empire — based out of what was once Boulder, Colorado, thanks to survivors of the fall inside a nearby military bunker — who demand a tribute of grain from them. Seeing the people who have been so kind to her attacked, she rises to their defense, but is mercilessly slain by the soldiers; only to miraculously return to life soon after they depart. News of this miracle spreads quickly, and draws the attention of many far and wide. Slowly, an organized movement to resist the Redstone Empire forms around her, in the process uniting the many disparate and primitive peoples of the continent once called Columbia, who have been increasingly terrorized by the Empire's growing power. Meanwhile her memories, both of her original life and of her second, slowly return to her in a confusing jumble, and once the Redstone Empire is defeated and the new Columbian Union reconstituted, she begins her quest for Xio in earnest, simultaneously spreading the reach of the Union to ever more far-flung peoples as it reaches out of the innermost depths of the continent to stretch from sea to shining sea. But when they reach the seas at last, they discover that they are not the only power left on this Earth. On both the east and west coasts, they find small settlements of explorers and colonists from more-advanced survivors across the respective seas, each growing their own empires, each claiming to be striving to reunite and restore humanity, but actually, on the far side of the world, at war with each other over who will lead that reunited world; a war whose final battlefield will be the continents of the western hemisphere, pressuring resurgent Columbia to pick a side or face a war on two fronts. (More details).
Before the fall, the Internation's first and last settlements were uniquely poised to survive just such a catastrophe. Deep under the sea in the Pacific Ocean, centered on the base of their first Starbridge, the world's first seafloor settlement was developed, Pacifica. Geothermally powered, totally self-sustaining, and shielded from above by the entire depths of the ocean, it was protected from the rain of debris that fell as the moon was shattered, and it was fortunate enough to not be struck by the falling World Ring, leaving its only damage the fall of its own Starbridge across one small part of the settlement. Meanwhile on the other side of the world, the crown jewel of the Internation's project to develop the undesirable interiors of the world's continents into luxurious technological paradises was a project called the Arcology of Alexandria. It was an enormous pyramid-shaped structure in the middle of the Sahara Desert that housed a great museum of both natural and human history, as well as many libraries, botanic and zoological gardens, aquariums, and every other kind of educational attraction you could think of, plus housing for its enormous staff and quarters enough for its many guests from around the world, and all the infrastructure needed to feed and otherwise support them. It was of course surrounded by vast stretches of other civilization filling much of the rest of the desert, but during the fall much of that fell into ruin, and as the climate changed over the millennia the desert became even less inhabitable than it had been before the Internation's technology had transformed it. As the ecological ravishing of the world settled down after the fall, both of these civilizations slowly began to spread their influence to lands across the boundaries that isolated them — the desert around Alexandria, and the ocean around Pacifica. Those settlements, built up and industrialized over time by the preserved knowledge of their founders, gradually grew into great empires of their respective domains: Pacifica colonizing Auei and Asia, Alexandria colonizing Africa and Europe. Both thought themselves the great civilizing forces of the world, doing a great good to restore humanity. But when the two met in the Middle East, neither could agree to give up any of their own power to share with the other, and war broke out, an interminable war that has consumed all of the eastern hemisphere for centuries. Now that both empires have begun a race to reclaim the western hemisphere before the other, Met and her resurgent Columbia must negotiate a truce between them or else fall to a war on two fronts. As she recovers her memories further and eventually recalls who she truly is — an immortal now tens of thousands of years old, once worshipped as a goddess by ancient peoples now barely remembered — she eventually finds a way to do this by exploiting the beliefs of the syncretist world religion that both Pacific and Alexandria have preserved from the time before the fall. Considered by most in those days to be mere shared culture, a common literary tradition but not at all true, she demonstrates her immortality and invulnerability and convinces the people of both empires that she truely is the goddess remembered in their tales, and with that influence spurs political change in each of them, which then allows for a mutual peace between Pacifica, Columbia, and Alexandria. (More details).
With the world reunited and no longer at at war, more peaceful technological progress is again possible. And when Earth reaches the start of its second Space Age, something miraculous is discovered. The planet Venus appears to be populated by a technologically advanced civilization! Developing radio transmitters powerful enough to communicate across that distance, they find that it is not in fact inhabited... by any organic persons. The robots who long ago before the fall were tasked with terraforming the planet have continued to do so after the fall of human civilization, and as they are intentionally programmed with no autonomous initiative, only to carry out tasks as dictated to them, they have been standing around on Venus patiently awaiting further orders for thousands of years. Now in contact with them again, humanity are able to give them those orders, requesting the robots return to Earth. With their help, mankind is quickly bootstrapped back to their previous level of technological advancement, including taking up residence on paradisal Venus, beginning to redevelop Mars (which has been uninhabited since the fall), and even the rebuilding of the Starbridges and eventually the World Ring. Finding the solar system free of hostile aliens, which the robots take credit for per their last orders from the Foundation, they cautiously explore outside the portal once more. There they find a galaxy now dominated by the last survivors of the Foundation, if you could call them that — Kron, and his four loyal brothers, now weilding technology far in advance of even the old Ehrban, thanks to hybridization of the Pantheon's nanites with those of the Ehrban leader called Amouch. The galaxy is populated mostly by Ehrban, but ruled over by Kron and his lackeys like gods, an affectation now complete with what by all means appears to be real indomitable magical power on top of their existing immortality. Already worshipped as a goddess by the people of Earth, albeit a far more benevolent one, and being the neice of these terrifying gods of the galaxy herself, she is able to convince them to grant her that power as well, and to claim Earth as her territory, if she pledges subservience to the high god Kron. But with that power, and with the power of Earth's army of automatons to analyze and eventually reproduce it, she is eventually able to grant others such power as well, in sufficient numbers that they are able to rein in the so-called gods and eventually cast them down to powerlessness, restoring peace to the galaxy at last. And then, after so long searching, she finally discovers the body of her long lost Xio, still alive inside a facility now buried under literal mountains of stone at the base of what was once the Andes Starbridge, in what are now called the Jormungandr Mountains — the world-spanning wreckage of the old World Ring. But Xio, though biologically alive of course thanks to his immortality, is trapped inside his own mind now, so as to sustain what he believed to be the last remants of humanity inside the old virtual world called Virtuality, kept operational all these millennia only by its connection to his immortal body. She begins devising a plan to awaken him without sacrificing all the minds he has preserved in that virtual world. (More details).