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Sub-Saharan African countries spent on average 0.3% of their GDP on S&T (Science and Technology) in 2007. This represents a combined increase from US$1.8bn in 2002 to US$2.8bn in 2007. North African countries spend a comparative 0.4% of GDP on research, an increase from US$2.6bn in 2002 to US$3.3bn in 2007.
British Museum. Decoupage or découpage (/ ˌdeɪkuːˈpɑːʒ /; [1] French: [dekupaʒ]) is the art of decorating an object by gluing colored paper cutouts onto it in combination with special paint effects, gold leaf, and other decorative elements. Commonly, an object like a small box or an item of furniture is covered by cutouts from ...
1950, Sasol, the country's largest fuel producer, was founded. 1950, Q20 lubricant was invented by Mr. Robertson in Pinetown. [2] Q20 is an all purpose lubricating spray that is owned by the Triton-Leo Group (Pty) Ltd. [3] The name derives from "it has 20 answers to 20 questions". 1957, Flame ionization detector by Harley and Pretorius at the ...
Glass beads in Sub-Saharan Africa were used as an economic tool, denoting wealth and political power. Yoruba kings, or Obas, often encouraged complicated and abundant glass beadworking as a visual symbol of their nation's wealth. [1] Production of beads in great quantities could also be offered by Obas to various deities as a symbol of ...
The Levallois technique (IPA: [lə.va.lwa]) is a name given by archaeologists to a distinctive type of stone knapping developed around 250,000 to 300,000 years ago during the Middle Palaeolithic period. It is part of the Mousterian stone tool industry, and was used by the Neanderthals in Europe and by modern humans in other regions such as the ...
History of Africa. This article contains oral traditions intended to be performed orally and not suited to literary form. Archaic humans emerged out of Africa between 0.5 and 1.8 million years ago. This was followed by the emergence of modern humans (Homo sapiens) in East Africa around 300,000–250,000 years ago.
African textiles can be used as historical documents. [31] cloth can be used to commemorate a certain person, event, and even a political cause. Much of the history conveyed had more to do with how others impacted the African people, rather than about the African people themselves.
Iron metallurgy may have been independently developed in the Nok culture between the 9th century BCE and 550 BCE. [ 5 ][ 6 ] The nearby Djenné-Djenno culture of the Niger Valley in Mali shows evidence of iron production from c. 250 BCE. The Bantu expansion spread the technology to Eastern and Southern Africa between 500 BCE and 400 CE, as ...