From TactWiki
Overview
Civic NPCs are NPCs that offer Civic Diplomacy. Civic NPCs reside within towns throughout the various regions of Telon. Each NPC represents one of the stations of the people within that town. All eight stations are not necessarily represented equally in every city, although every city has soldiers.
The station and race of the NPCs in each town generally determine the type of expressions used while parleying. For example, Civic NPCs in Martok tend to use Demand (for Orcs and Soldiers) and Reason (for Goblins and Crafters). Some conversations are blocked in each city or outpost based on the racial expressions of the NPCs in that city. For more, information see the article on Towns.
Civic NPCs in Kojan
Civic NPCs in Qalia
Civic Diplomacy Buffs
Doing civic diplomacy affects levers. When these levers cross a threshold, they activate a buff in the location (and possible the outpost) of the location you are doing civic diplomacy in. A full buff listing can be found here: Civic Levers-Buffs.
Cities and Outpost links