The first characteristic: the main factor promoting economic development for a long period of decades is often the production potential and of the level of supply, rather than the total cost of a given year. The source makes the potential production increases are usually classified in two types: the first type is increases the level of inputs (labor, capital, resources, etc.); the second type is the progress of the Special Science is science and technology. The type of the second source tend to mobilize comes up constantly, more and more important role, especially in recent decades.
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