There were many kingdoms and empires in all regions of the continent of Africa throughout history. A kingdom is a state with a king or queen as its head. An empire is a political unit made up of several territories, military outposts, and peoples, "usually created by conquest, and divided between a dominant centre and subordinate peripheries".
In Africa states emerged in a process covering many generations and centuries. Most states were created through conquest or the borrowing and assimilation of ideas and institutions, while some developed through internal, largely isolated development. Economic development "gave rise to a perceived need for centralized institutions and 'territorial' leadership that transcended older bonds of kinship and community". The politicoreligious struggle between the people and the king sometimes saw the people victorious and the establishment of sacred kings with little political power (termed "adverse sacralisation"), contrasted with divine kings equated to gods. Kings and queens used both "instrumental power", the employment of direct influence to achieve a desired outcome, and "creative power", the use of ritual and mythology.
