Matrilineality is the tracing of kinship through the female line. It may also correlate with a social system in which each person is identified with their matriline – their mother's lineage – and which can involve the inheritance of property and/or titles. A matriline is a line of descent from a female ancestor to a descendant (of either sex) in which the individuals in all intervening generations are mothers – in other words, a 'mother line'. In a matrilineal descent system, an individual is considered to belong to the same descent group as their mother. This matrilineal descent pattern is in contrast to the more common pattern of patrilineal descent from which a family name is usually derived. The matriline of historical nobility was also called their enatic or uterine ancestry, corresponding to the patrilineal or 'agnatic' ancestry. Matrilineality is the tracing of kinship through the female line. It may also correlate with a social system in which each person is identified with their matriline – their mother's lineage – and which can involve the inheritance of property and/or titles. A matriline is a line of descent from a female ancestor to a descendant (of either sex) in which the individuals in all intervening generations are mothers – in other words, a 'mother line'. In a matrilineal descent system, an individual is considered to belong to the same descent group as their mother. This matrilineal descent pattern is in contrast to the more common pattern of patrilineal descent from which a family name is usually derived. The matriline of historical nobility was also called their enatic or uterine ancestry, corresponding to the patrilineal or 'agnatic' ancestry. In some traditional societies and cultures, membership in their groups was – and, in the following list, still is if shown in italics – inherited matrilineally. Examples include the Cherokee, Choctaw, Gitksan, Haida, Hopi, Iroquois, Lenape, Navajo and Tlingit of North America; the Kuna people of Panama; the Kogi and Carib of South America; the Minangkabau people of West Sumatra, Indonesia and Negeri Sembilan, Malaysia; the Trobrianders, Dobu and Nagovisi of Melanesia; the Nairs of Kerala and the Bunts and Billava of Karnataka in south India; the Khasi, Jaintia and Garo of Meghalaya in northeast India; the Ngalops and Sharchops of Bhutan; Muslims and the Tamils in eastern Sri Lanka; the Mosuo of China; the Kayah of Southeast Asia, the Basques of Spain and France; the Akan including the Ashanti of west Africa; virtually all groups across the so-called 'matrilineal belt' of south-central Africa; the Tuareg of west and north Africa; the Serer of Senegal, The Gambia and Mauritania; and most Jewish communities. In the late 19th century, almost all prehistorians and anthropologists believed, following Lewis H. Morgan's influential book Ancient Society, that early human kinship everywhere was matrilineal. This idea was taken up by Friedrich Engels in The Origin of the Family, Private Property and the State. The Morgan-Engels thesis that humanity's earliest domestic institution was not the family but the matrilineal clan soon became incorporated into communist orthodoxy. In reaction, most 20th century social anthropologists considered the theory of matrilineal priority untenable, although during the 1970s and 1980s, a range of feminist scholars often attempted to revive it. In recent years, evolutionary biologists, geneticists and palaeoanthropologists have been reassessing the issues, many citing genetic and other evidence that early human kinship may have been matrilineal after all. One crucial piece of indirect evidence has been genetic data suggesting that over thousands of years, women among sub-Saharan African hunter-gatherers have chosen to reside postmaritally not with their husbands' family but with their own mother and other natal kin. Another line of argument is that when sisters and their mothers help each other with childcare, the descent line tends to be matrilineal rather than patrilineal. Biological anthropologists are now widely agreed that cooperative childcare was a development crucial in making possible the evolution of the unusually large human brain and characteristically human psychology. Matrilineal surnames are names transmitted from mother to daughter, in contrast to the more familiar patrilineal surnames transmitted from father to son, the pattern most common among family names today. For clarity and for brevity, the scientific terms patrilineal surname and matrilineal surname are usually abbreviated as patriname and matriname. There appears to be some evidence for the presence of matrilineality in Pre-Islamic Arabia, in a very limited number of the Arabian peoples (first of all among the Amorites of Yemen, and among some strata of Nabateans in Northern Arabia); on the other hand, there does not seem to be any reliable evidence for the presence of matrilineality in Islamic Arabia, although the Fatimid Caliphate claimed succession from the Islamic Prophet Mohammad via his daughter Fatima. A modern example from South Africa is the order of succession to the position of the Rain Queen in a culture of matrilineal primogeniture: not only is dynastic descent reckoned through the female line, but only females are eligible to inherit. Most of the example cultures in this article are based on (matrilineal) clans. Any clan might possibly contain from one to several or many descent groups or family groups – i.e., any matrilineal clan might be descended from one or several or many unrelated female ancestors. Also, each such descent group might have its own family name or surname, as one possible cultural pattern. The following two example cultures each follow a different pattern, however: Example 1. Members of the (matrilineal) clan culture Minangkabau do not even have a surname or family name, see this culture's own section below. In contrast, members do have a clan name, which is important in their lives although not included in the member's name. Instead, one's name is just one's given name.