Suramar was not Horde until BFA. The tragedy that befell Suramar happened well before they became an ally race of the Horde. (also note they became an ally of the Horde, they did not join the Horde).
Suramar was not Horde until BFA. The tragedy that befell Suramar happened well before they became an ally race of the Horde. (also note they became an ally of the Horde, they did not join the Horde).