The Archinviel Dukedom Sanctuary has a variety of monsters that has dragon bloodline or dragon power.
On the other hand the Dragon Kingdom Sanctuary has powerful monsters that are great at manipulating their elemental energy.
These two Sanctuaries causes the two territories relationship to become slightly awkward.
Most of the time they used their captured monsters to trade with one another but also most of the time Tamers of the two territory would fight.
The Archinviel Dukedom clearly has an advantage, the reason for this is because their guildmaster is a former member of Shadowslash's inner group.
She has deep connection to Thousand Race Kingdom so the Archinviel Dukedom was thriving.
The Dragon Kingdom on the other hand had their foundation so they weren't losing out but their disadvantage is that they weren't able to send a group of Adventurers to Thousand Race Kingdom.