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Step 1:  Determine if William is correct

(-6) - (+3)

-6 - 3

-9

So... William was incorrect because he make the 6 positive when it is supposed to be negative.

He did:  6 + (-3) = 3

He was supposed to do:  -6 + (-3) = -9

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step-by-step explanation:

no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction