You take your save file over to the next DLCs.3) Golems of Amgarrak DLC4) Witch Hunt DLCYou then take your Witch Hunt save file to the next game.5) Dragon Age 2 (including Exiled Prince, Mark of the Assassin, Legacy DLCs)You then just generally remember your actions in these two games, and input them into the Dragon Age Keep website to create a 'world state'.
I'll also answer because I feel like it, but Aes basically got it.1) Dragon Age: Origins (including Stone Prisoner, Warden's Keep, Return to Ostagar DLCs)2) Dragon Age: Origins - Awakening expansionLeliana's Song and Darkspawn Chronicles DLCs are standalone but reward items that unlock in both Origins and Awakening. This obviously only applies to the PC version at the moment, but it wouldn't surprise me if something like this hits the console versions eventually, too. Rather than let Warden's Keep go down as the Horse Armor DLC of 2009, BioWare has listened to the people and released an add-on that adds a storage chest to the party camp in Dragon Age: Origins.
Dragon Age Origins Camp Storage 7,4/10 2504 reviews
