Items with certain effects listed as being "In Areas outside own nation's Control" will only take effect in Conquest regions where the nation you currently are allied to is not in control of the region you are in (including cities). For example: If you are currently allied to Windurst, and Bastok controls the region of Elshimo Lowlands, then the effect of any armor's effects with "In areas outside own nation's control" will be active in Kazham, Norg, Sea Serpent Grotto, and Yuhtunga Jungle.