Word: coppers
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...Iceman's equipment revealed an unexpected degree of sophistication. His copper ax was initially mistaken by Spindler as evidence that the find dated from the Bronze rather than the Neolithic Age. But the blade turned out to be nearly pure copper, not bronze...
...primitive clock and transporting goods with their new invention: the wheel. Furthermore, they could record these deeds in the world's first written language. Along the Lower Nile, Egyptians were beginning to construct monumental buildings and decorate stone palettes and other objects with hieroglyphs; craftsmen worked skillfully with copper and silver. In China and Mesopotamia merchants were keeping track of their accounts with primitive numbering systems. In the southwestern Pacific, islanders were sailing double-hulled canoes, having mastered the rudiments of offshore navigation...
...Neolithic society -- from the Old to the Late Stone Age -- a change that University of Frankfurt prehistorian Jens Luning calls "the revolutionary event in human history." It marked the transition from subsistence hunting and gathering to agriculture and the domestication of animals; the stockpiling of food; extensive use of copper; the manufacture of increasingly sophisticated tools and pottery. A dependable food supply in turn led to a population explosion: by about 4000 B.C. there were an estimated 86.5 million people on earth, about eight times as many as there had been 2,000 years earlier...
...Copper sun or scarlet...
There was much optimism in Africa in the 1970s, in the first full decade or two after the granting of independence. Africa had its Golconda of commodities -- cocoa, coffee, copper and palm oil -- and their prices were high. Africans borrowed against those prices; the world happily lent. Unlike other countries now heavily indebted, African nations owe the bulk of their debt to First World governments, the International Monetary Fund and the World Bank rather than to commercial banks and other private creditors...