The horma was a tribute paid by subservient

tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide use of the term in English is in the discipline of anthropology. The definition is contested, in part due to conflict ...

s to their protectors in traditional Sahrawi-

Moorish The term Moor is an exonym used in European languages to designate the Muslim populations of North Africa (the Maghreb) and the Iberian Peninsula (particularly al-Andalus) during the Middle Ages. Moors are not a single, distinct or self-defi ...

society in today's

Mauritania Mauritania, officially the Islamic Republic of Mauritania, is a sovereign country in Maghreb, Northwest Africa. It is bordered by the Atlantic Ocean to the west, Western Sahara to Mauritania–Western Sahara border, the north and northwest, ...

and

Western Sahara Western Sahara is a territorial dispute, disputed territory in Maghreb, North-western Africa. It has a surface area of . Approximately 30% of the territory () is controlled by the Sahrawi Arab Democratic Republic (SADR); the remaining 70% is ...

North Africa North Africa (sometimes Northern Africa) is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region. However, it is sometimes defined as stretching from the Atlantic shores of t ...

. The powerful

Hassane The Hassane is a name for the traditionally dominant warrior tribes of the Sahrawi-Moorish areas of present-day Mauritania, southern Morocco and Western Sahara. Although lines were blurred by intermarriage and tribal re-affiliation, the Hassane w ...

warrior tribes would extract it from low-

caste A caste is a Essentialism, fixed social group into which an individual is born within a particular system of social stratification: a caste system. Within such a system, individuals are expected to marry exclusively within the same caste (en ...

Znaga The Sanhaja (, or زناگة ''Znāga''; , pl. Iẓnagen, and also Aẓnaj, pl. Iẓnajen) were once one of the largest Berber tribal confederations, along with the Zanata and Masmuda confederations. Many tribes in Algeria, Libya, Mali, Mauritan ...

tribes, where each member was forced to personally pay an overlord in the dominant tribe. The forms and rates of horma varied throughout the region and through history, and was normally dependent on the relations of strength between the tribes involved. It could be paid in

cattle Cattle (''Bos taurus'') are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus '' Bos''. Mature female cattle are calle ...

, goods or services.

Further reading