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metchelle
Raegan administration was dominated by the supply-side economics, which is a macroeconomics theory that opposes to the idea that economic growth can be achieved through capital investment and through lowering barriers on the goods and services production.
oopsydaisy
Out of the choices given, the theory of macroeconomics dominated the Reagan administration is supply side economics. Supply side economics is when the consumer benefit from a lower price for a better supply of goods.