These are frequently associated with changes in the status quo that are perceived to affect the supply and demand for land, established land use patterns, or competition between different types of land use. This tension can exist between statutory, customary, informal, or religious forms of land tenure. The tension can be particularly challenging when the state seeks to bring land within a statutory legal framework when it is also claimed under a customary system by tribal, ethnic, or religious communities who view the territory in question as part of their homeland or self-identity.