Timeline

AV 0 - Appearance of Dragoons during the climactic battles of the Great War. Assumed start of the 4th Age.

AV 424 - Founding of the 39 Shards.

AV 460 - First Shard War between 39 Shards and Agothos.

AV 951 - Fourth Shard War, ending in humiliating peace for Agothos and the dissolution of the Free Alliance.

AV 974 - Events of the Drakonheart campaign begin.

AV 1255 - The Mu Crisis (and the events of the Alpha and Omega campaign) begins.