The two best organised subs that I use are '/r/AskHistorians/' and '/r/syriancivilwar/'. Historians is very well moderated (strict) and has users have expert t

The two best organised subs that I use are '/r/AskHistorians/' and '/r/syriancivilwar/'. Historians is very well moderated (strict) and has users have expert tags. The civilwar sub always has the newest information tagged with the needed facts about the sources. Lots of different people and sometimes pretty high level discussions. They are literally producing their own magazin now. There are some of the best.