A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
Unless stated otherwise, all information herein is taken from The World of Robert Jordan's "The Wheel of Time", Chapter 10.
Author: Atarah al'Norahn
The nation of Coremanda was located in what is now known as eastern Andor. To the south it was bordered by Eharon to the southwest and Essenia to the southeast. To the west were Manetheren to the southwest and Aridhol to the northwest, Aramaelle to the north, and Tar Valon and Almoren to the northeast. North of the Damona Mountains was an area known as the Splintered Hills which contained the fort Eagle's Reaches (TGS, Ch. 27).
Cities, Towns, and Villages
The capital city of Coremanda was Shaemal. Other cities included Braem (Now New Braem), Hai Caemlyn (now Caemlyn), and Nailine Samfara. There were Waygates at Shaemal, Braem (LoC, Ch. 20), and Hai Caemlyn (TEotW, Ch. 42).
Formation, Government, and Nobility
Like the other nations in its time, Coremanda was formed sometime after the Breaking of the World.
Before the Trolloc Wars
The Trolloc Wars
Nothing is known of Coremanda's part in the Trolloc Wars except that, as known to everyone, it stood against the Shadow.
After the Trolloc Wars
The Trolloc Wars took a heavy toll upon the nation of Coremanda. Braem and Shaemal were completely destroyed during the Wars (TFoH, Ch. 1, ACoS, Ch. 30). By the end of the wars, the entire nation of Coremanda was destroyed.