A cycle of expansion and contraction phases that a nation's economy experiences over time is .

The business cycle model shows the fluctuations in a nation's aggregate output and employment over time. The model shows the four phases an economy experiences over the long-run: expansion, peak, recession, and trough.

Explanation:

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The business cycle model shows the fluctuations in a nation's aggregate output and employment over time. The model shows the four phases an economy experiences over the long-run: expansion, peak, recession, and trough.

Explanation:

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )

there are indirect ways of affecting state laws   by with holding funding's. and that's why we have a 55mph speed on the high way with a design of 70mph speed.