Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Decentralization or Decentralisation (see spelling differences) is the process of dispersing decision-making governance closer to the people and/or citizen. It includes the dispersal of administration or governance in sectors or areas like engineering, management science, political science, political economy, sociology and economics. Decentralization is also possible in the dispersal of population and employment. Law, science and technological advancements lead to highly decentralized human endeavours. "While frequently left undefined (Pollitt, 2005), decentralization has also been assigned many different meanings (Reichard Pollitt, 2005), languages (Ouedraogo, 2003), general contexts (Conyers, 1984), fields of research, and specific scholars and studies." (Dubois and Fattore 2009) A central theme in decentralization is the difference between a hierarchy, based on authority: two players in an unequal-power relationship; and an interface: a lateral relationship between two players of roughly equal power.