Land
It is acknowledged that conflict over land is a major source of violence in various parts of Mindanao, particularly the prosed Bangsamoro region. Historical accounts trace the root cause of land issues and identity-based conflict to the introduction of the Regalian doctrine of land ownership by Spanish colonizers. During the American colonial regime at the turn of the 20th century, dispossession of land held by the original inhabitants of Mindanao accelerated, with an emphasis of titling lands for private ownership that clashed with the tradition of ancestral domain.