Economic Definition of expansion. Defined.
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Term expansion Definition: A phase of the business cycle characterized by a general period of rising economic activity. An expansion is one of two basic business cycle phases. The other is contraction. The transition from expansion to contraction is termed a peak and the transition from contraction to expansion is termed a trough. Expansions last an average of about 3-4 years, but this by no means not guaranteed. An expansion in the early 1980s lasted a mere 12 months. The next expansion then lasted over 8 years. Much of the 1960s was dedicated to a 106-month expansion, almost 9 years.
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