Draconic-Elven War

When the high elves first came to IIo, they had access to the near-infinite power of the First Gate, and the newly Lessened dragons would not stand by while another race spread across their planet. The Draconic-Elven War waged across IIo for millennia, until finally the elves emerged as the new rulers of IIo, and the dragons decided to wait out the relatively short-lived elves.