An organisation, whether territorial or not, can become the vassal of another compatible organisation. The latter then becomes its hierarchical superior, collects its taxes, and gains the right to move freely within its domain. To become a vassal, a lord must travel to the lands of the future liege and obtain their consent. The vassalage pact is established between the organisations, not their respective leaders: if an organisation changes owner, the vassalage link remains. However, it can be broken if the vassal declares [URL=/help/act?type=indep]independence[/URL] or becomes the vassal of another organisation. The liege can prevent this by maintaining a presence within the domain.