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Answer: Lincoln realized that if Maryland joined the confederacy, Washington, DC, would be surrounded, and the war would be over. As the war progressed, Lincoln initially thought it acceptable if armies in the field freed the slaves of secessionists and claimed the newly freed people as contraband in war.
Explanation: Give me the brainiest
It should be noted that changes in Lincoln's thinking that led to the Civil War being waged as a total war is Slavery.
According to the question, we are to discuss the Lincoln's thinking that led to the Civil War.
As a result of this we can see that Slavery was been stated by Lincoln as the the reason for the war.
Therefore, slavery serves as changes in Lincoln's thinking that led to the Civil War .
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