Finally the authoruse his own newideaexplainknottyquestionsappearinginthehistoryand further analyzeand explain theeconomicreasons causing the structurechange instockindex.
North, a Nobel Prize-winning economic historian, asserts in his book StructureandChangeinEconomicHistory that when most of mankind stopped being hunter-gatherers 10, 000 years ago and settled down to farm, there was a basic shift from common property rights to exclusive ones.