Which number represents the time period in which the civil war began

The answer to this question is 1861 to 1865

Explanation:

The war started in April 12, 1861, on south carolina, when the Confederates bombarded Union soldiers at Fort Sumter, The war ended in the Spring.

On April 9 1865, Robert E. Lee yielded to  the last major Confederate army to Ulysses S. Grant at Appomattox Courthouse.

The number that represents the time period that led to the civil war is April 12, 1861 - April 9 1865.

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