Bantu expansionThe Bantu expansion is a hypothesis about the history of the major series of migrations of the original Proto-Bantu-speaking group, which spread from an original nucleus around Central Africa across much of sub-Saharan Africa. In the process, the Proto-Bantu-speaking settlers displaced, eliminated or absorbed pre-existing hunter-gatherer and pastoralist groups that they encountered. The primary evidence for this expansion is linguistic – a great many of the languages which are spoken across sub-Equatorial Africa are remarkably similar to each other, suggesting the common cultural origin of their original speakers.
Hadza peopleThe Hadza, or Hadzabe (Wahadzabe, in Swahili), are a protected Hunter-gatherer Tanzanian indigenous ethnic group from Baray ward in southwest Karatu District of Arusha Region. They live around Lake Eyasi basin in the central Rift Valley and in the neighboring Serengeti Plateau. There are, as of 2015, between 1,200 and 1,300 Hadza people living in Tanzania, however only around 400 Hadza still survive exclusively based on the traditional means of foraging.
NamibiaNamibia (nəˈmɪbiə, næˈ-), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and east. Although it does not border Zimbabwe, less than 200 metres (660 feet) of the Botswanan right bank of the Zambezi River separates the two countries. Namibia gained independence from South Africa on 21 March 1990, following the Namibian War of Independence.
VowelA vowel is a syllabic speech sound pronounced without any stricture in the vocal tract. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness and also in quantity (length). They are usually voiced and are closely involved in prosodic variation such as tone, intonation and stress. The word vowel comes from the Latin word vocalis, meaning "vocal" (i.e. relating to the voice).
Areal featureIn geolinguistics, areal features are elements shared by languages or dialects in a geographic area, particularly when such features are not descended from a proto-language, or, common ancestor language. That is, an areal feature is contrasted to lingual-genealogically determined similarity within the same language family. Features may diffuse from one dominant language to neighbouring languages (see "sprachbund"). Genetic relationships are represented in the family tree model of language change, and areal relationships are represented in the wave model.
Lateral consonantA lateral is a consonant in which the airstream proceeds along one or both of the sides of the tongue, but it is blocked by the tongue from going through the middle of the mouth. An example of a lateral consonant is the English L, as in Larry. Lateral consonants contrast with central consonants, in which the airstream flows through the center of the mouth. For the most common laterals, the tip of the tongue makes contact with the upper teeth (see dental consonant) or the upper gum (see alveolar consonant), but there are many other possible places for laterals to be made.
KenyaKenya, officially the Republic of Kenya (Jamhuri ya Kenya), is a country in East Africa. With a population of more than 47.6 million in the 2019 census, Kenya is the 28th most populous country in the world and 7th most populous in Africa. Kenya's capital and largest city is Nairobi, while its oldest and second largest city, which until 1907 was also Kenya's first capital city, is the coastal city of Mombasa which includes Mombasa Island in the Indian Ocean and the surrounding mainland.
Sandawe peopleThe Sandawe are an indigenous ethnic group of Southeast Africa, based in the Chemba District of Dodoma Region in central Tanzania. In 2000, the Sandawe population was estimated to be 40,000. The Sandawe language is a tonal language that uses click consonants, as do the Khoe languages of southern Africa. There is no other proven connection between the two. Although the Khoisan were originally thought to possess the oldest human DNA lineages, those of the Sandawe are older. This suggests southern Khoisan originated in East Africa.
ǀXam languageǀXam (pronounced ǀ͡xam, in English ˈkɑːm) is an extinct language (or possibly cluster of languages) of South Africa formerly spoken by the ǀXam-ka ǃʼē. It is part of the ǃUi branch of the Tuu languages and closely related to the moribund Nǁng language. Much of the scholarly work on ǀXam was performed by Wilhelm Bleek, a German linguist of the 19th century, who studied a variety of ǀXam spoken at Achterveld, and (with Lucy Lloyd) another spoken at Strandberg and Katkop while working with ǁKábbo, Diaǃkwāin, ǀAǃkúṅta, ǃKwéite̥n ta ǁKēn, ǀHaṅǂkassʼō and other speakers.
Contour (linguistics)In phonetics, contour describes speech sounds that behave as single segments but make an internal transition from one quality, place, or manner to another. Such sounds may be tones, vowels, or consonants. Many tone languages have contour tones, which move from one level to another. For example, Mandarin Chinese has four lexical tones. The high tone is level, without contour; the falling tone is a contour from high pitch to low; the rising tone a contour from mid pitch to high, and, when spoken in isolation, the low tone takes on a dipping contour, mid to low and then to high pitch.
