Positive economic growth results from an increase in productive resources, such as labor and capital. Suppose a stock market crash makes people feel poorer. 4.0 and you must attribute OpenStax. In the long run, though, since long-term aggregate supply is fixed by the factors of production, short-term aggregate supply shifts to the left so that the only effect of a change in aggregate demand is a change in the price level. The big inventions of economic history: electricity, the railroad, the steam engine, all of these things, the internet, caused shifts outward in aggregate supply.
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