The need and centrality of R&D investment in the growth march of a country

Nations grow at differing speeds and varied reasons are assigned as causal factors for the different growth potentials displayed by them; as measured by the Gross Domestic Product (GDP) metric. What drives this growth is a question which has intrigued both theorists and developmental researchers. Can growth solely be determined by capital accumulation or with a growth of the labour force or does technological progress also contribute to it? GDP measures the total value of all the goods produced  .. 

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