- Arnor reunification
If starting with Arnor is not selected, Eriador can become Arnor by acquiring settlements, building the Hall of Kings building in Annúminas and forging an alliance with Gondor. By hovering the mouse pointer over the Elendilmir ancillary possessed by Aragorn, the requirements for the reunification can be seen. The settlements required are: Hobbiton, Michel Delving, Sackville, Deephallow, Bucklebury, Tuckborough, Bree, Archet, Mengalen, Amon Sûl, Annúminas, Fornost Erain, Athilin, North Tharbad, Metraith, Fennas Drúnin, Barketta, Iach Sarn, Morva Tarth, Cameth Brin, Celoniach, Argond and Nochva Rhaglaw.
For the AI, beginning on turn 90 there is a 10% chance each turn that Arnor will be reunified as long as Annúminas is still controlled.
To complete the transformation to Arnor, save the game, exit and run the FAR.bat file in the mod root folder, normally 'Third_Age_3'. This will change the descriptions of all settlements, watch towers, etc. to reflect ownership by Arnor. All messages will also refer to Arnor instead of FPoE. This bat file must be run again to reset the values to FPoE.
MOS_readme.txt