The Unicorns were coming.

It had been a revolutionary idea. Pegasi and Earth Ponies living together. One race to bring the weather necessary to feed the crops the other would grow to sustain them both. Who needs magic anyway? Let the armies of Princess Platinum fight over the land rights to the barren icy wasteland of the north. In the town of Harmony, both races could work together for the betterment of all.

This is what happens when I get drunk and argue pre-unification scenarios at conventions.