British archaeologist whose book "Prehistoric Times" (7 editions between 1865-1913) achieved bestseller status. An early convert to Charles Darwin's theory of evolution Lord Avebury popularized prehistory both as a term and a subject. He introduced the words "Palaeolithic" (old) and "Neolithic" (new) thereby expanding the three-age system (Thomsen and Worsaae) to a four-age system dividing the Stone Age into old and new periods. He also interpreted cultural change as evidence of invasion from the east and the development of society as the result of economic advance.
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