Final answer:
During the Civil War, the northern economy experienced soaring prices after 1862 due to increased demand for goods and supplies to support the war causing inflation. Other effects like unemployment, increased immigration and labor strikes were not significant during the war.
Step-by-step explanation:
The Civil War had significant impacts on the northern economy. Among the options provided, (A) soaring prices after 1862 is the most accurate since it refers to inflation that occurred as a result of the war. The north experienced a certain level of inflation due to the increased demand for goods and supplies to support the war effort. The other options (high levels of unemployment, dramatic increases in immigration, and relatively few strikes) can be inaccurate as the war led to industrial growth in the north which created job opportunities. Moreover, the war didn't significantly affect immigration patterns and labor strikes were not a prominent issue during this time.
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