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History of languages ; rate of linguistics change; family tree model of linguistic diversification.
This book puts forward a different approach to language change, the punctuated equilibrium model. This is based on the premise that during most of the 100,000 or more years that humans have had language, states of equilibrium have existed during which linguistic features diffuse…
"This is a thoroughly revised, updated and expanded edition of Ralph Penny's authoritative textbook, first published in 1991, which provides a clear and elegant account of the development of Spanish over the last 2,000 years. Although principally oriented towards 'internal' hist…