primary – gifts of nature such as extracting or developing natural resources including farming, forestry, mining or fishingsecondary – manufacturing and the construction industries or the making of goods on a large scaletertiary – service industries which are made up of either commercial services concerned with trading activity or direct services to people such as teachers or doctors. Structural change refers to a shift in the importance of these sectors to the economy as a whole. As people in societies have an increasing amount of…

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