Barely five years later, after a nasty recession, the country began a period of uninterrupted economic expansion matched by no other rich country.

一次严重的经济衰退过后仅仅5年，这个国家就开启了不间断的经济扩张时期，没有任何富裕国家能与之匹敌。

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It was the period of the establishment of the two-party system and the key period of economic and territorial expansion of the country.

这个时期也是美国两党制形成、对外经济扩张和领土扩张的重要时期。

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However, at least there is a change now, and that brings the chance of a period of economic expansion fueled by new optimism.

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Similarly, risk concentrations that might be acceptable at a single institution in a period of economic expansion could be dangerous if they existed at a large number of institutions simultaneously.

FORBES: Transcript

To understand just how big these numbers are, consider that the last period of economic expansion in America produced profits averaging 8 percent of the economy, significantly below their current percentage of GDP.

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