edgeways.ru
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специально 4you Пользователь: nekto (IP-адрес скрыт) [Модератор] Дата: 21, June, 2011 01:53 Цитата: Из этой вот статьи: [edgeways.ru] ""In much of Africa, metallurgy was characterized by the absence of a Bronze Age, and the transition from "stone to steel" in tool substances. Discoveries of very early copper and bronze working sites in Niger, however, can still support that iron working may have developed in that region and spread elsewhere. Iron metallurgy has been attested very early, the earliest instances of iron smelting in Termit, Niger may date to as early as 1200 BC.[1] It was once believed that iron and copper working in Sub-Saharan Africa spread in conjunction with the Bantu expansion, from the Cameroon region to the African Great Lakes in the 3rd century BC, reaching the Cape around AD 400,[1] though more recent research in linguistics has tended to de-couple the connection between iron working and the spread of Bantu languages and agriculture. Sub Saharan Africa has produced very early instances of carbon steel found to be in production around 2000 years before present in northwest Tanzania, based on complex preheating principles. These discoveries, according to Schmidt and Avery (archaeologists credited with the discovery) are significant for the history of metallurgy."" Как Вам нигерийский чугун и танзанийская сталь? Чем в это время занимаются передовые эллины и не менее передовые минусинцы? Ах, пардон! Их ещё и на свет не родилось... |