Where is Equestria? The majority covers what used to be considered the American continent, but that was before the war...
It was 2107, just ten years after nanomachines first became a reality, that they were first being used to control weather patterns. After decades of horrific storms and droughts from climate change mankind had finally conquered the weather. The only thing that was needed was a method to transport the nanomachines to the upper atmosphere. Entire books could be written going into the details as to why genetically modified horses were chosen.
To keep it short, the nanomachiens were produced via a biological process. Initial tests were performed on humans. We thought we were one step closer to the singularity. In truth, we were one step closer to our damnation. It was supposed to offer 'superhuman' strength, increased cellular regeneration, increased intelligence. But, the first human trials were a disaster. All suffered from dementia and died of severe brain hemorrhaging within 7-10 days of the operation. It was suggested to try the operation on younger subjects, but government laws and regulations prevented further human testing. There were some expireemnts with artificial lifeforms such as insects, but the project proved too costly. The use of horses came after a lead in a possible cancer cure. The cure lead to a dead end, but paved the way for further testing on horses as a vector for the nanomachines. The horses proved to be resilient to the negative effects of the nanites save for stunted growth.
So began Operation Pegasi. By heavily genetically modifying the horses to give them wings, they could transport the nanites directly to the upper atmosphere. In less than 5 years after their invention, humankind could use nanomachines to directly control the weather and climate. The havoc from over a century of global warming and climate change could finally be reversed. Droughts, floods, destructive storms...all a thing of the past.
Of course, we didn't stop there. These horses were becoming stronger and more intelligent. Why spend years training something when it could be sentient? Between genetic and nano augmentation, the first sentient horse was born on April 15th 2111. In two weeks it had grasped human speech. In four months, the new generation had developed their own language. A new breed of horses were being developed. A species that could more directly control the nanomachines. Through the use of a biologically based amplifier and antenna protruding from the base of the skull, the horse could effectively control the machines to their will...our will...
I was a part of the research team in Project 62-codename Alicorn. The idea was to combine all the befits of the new species into one glorious, perfect being. The first dozen or so generations were catastrophic failures. Those that lived more than a few weeks proved to be severally mentally unstable. For 7 years my team worked tirelessly with nothing to show. Our funding was going to be cut if we didn't have a working proof of concept by the end of the fiscal year.
There were only 3 and a half weeks left when she was born.
She was perfect. Genetically and physically perfect. Her wings were stronger than any others, Her intelligence unmatched, Her ability to control the nanites was unparalleled! The very next day we were handed a blank check and mass production began immediately.
Augest 27th 2127 at 5:13 AM: I was awoken by the sound of alarms and guards with assault rifles running down the halls of my dormitory. I grabbed my journal and caught a glimpse out the window. Building 7 was engulfed in flames. Had I comprehend the ramifications of what I had seen that night, I would have ended my life right then.
How many of the escaped? No official number was ever known. All I know is that the ones that didn't escape were executed...and there were only a small fraction of the bodies in the mass grave of alicorns than had been produced and born within the facility.
History has forgot who fired the first shot. We only know that they fired the last. The planet was devastated in the resulting war as hundreds of chemical, biological, and nuclear warheads were launched in a last ditch effort. Rumors say that She survived. That She rules them was a god-queen. She is as charismatic as She is treacherous.
What humans remained were rounded up and sent to work camps or executed on the spot. Only small pockets of humans still survive. We live underground, hidden from our creations and the mutants that wander the surface. What few alicorns survived the war turned on themselves. Only the strongest of them survived.
Too small of numbers to survive as a species much longer.
Food is running out.
May God have mercy on our souls.