Factions

Kingdoms of Men
Gondor - Men of Gondor

Rohan - Rohirrim

Dale - Men of Dale

Elven Kingdoms
Rivendell - Elves

Lórien - Galadhrim

Mirkwood - Silvan Elves

Dwarven Kingdoms
Erebor - Dwarves

Iron Hills - Dwarves

Ered Mithrin - Dwarves

Ered Luin - Dwarves

Other People
The Shire - Hobbits

Eriador Region - Dúnedain

Vales of Anduin - Beornings

Dark Servants
Mordor - Orcs/Black Uruks

Khazad-dûm - Orcs

Goblin-Twon - Orcs

Mt. Gundabad - Orcs

Dol Guldur - Orcs

Harad - Haradrim

Rhûn - Easterlings

Dunland - Dunlendings