Build a Road connection between the Neutral powers and your Settlement to take advantage of their positive features.
The world of Anno1404 is inhabited by many different Characters, many of which are first introduced to the player during the Campaign. This page describes the Neutral powers as they are interacted with during a Continuous game. For information about their involvement in the Campaign, see the individual Character pages. Neutral powers can be found spread around the map on different Islands. They will reside in their own building, which must be connected to your Settlement via a Road connection before they can be accessed. Neutral powers can only be allied to one player at a time. Being allied to a Neutral power allows the player to make use of the Neutral power's specialties, usually in exchange for Goods or Gold coins. Neutral powers will also occasionally offer basic and extensive quests, the latter of which must be completed to attain certain Diplomacy achievements.