What expansion stopped Alliance and Horde having separate campaign stories?
As far as I know currently, Alliance and Horde share the same exact campaign story throughout all the leveling zones in Midnight. At which expansion does this unification of storytelling occur? I decided that I want to do every quest each expansion has to offer, starting with TBC and realized that I would need to create both an Alliance and Horde character to experience both sides but didn't know which expansion the split story telling happens.
Edit: Shadowlands!