Why did the era of primordial evil end?

[BOZ]

heh heh!

i'd like to see someone do a writeup on this topic when the DI comes out.

 

[Doug McCrae]

What happened that screwed up all that great primordial chaos, anyway?

There was a great battle with the forces of light and good. The old evils were banished or imprisoned. Now they can only exert a subtle influence on the world through dreams.

See HP Lovecraft's Great Old Ones, the Titans of Greek myth and Morgoth in the Silmarillion.