B,because it is the right answer
Answer:
Lincoln justified emancipation as a wartime measure, and was careful to apply it only to the Confederate states currently in rebellion. Exempt from the proclamation were the four border slave states and all or parts of three Confederate states controlled by the Union Arm
Explanation:
A historian using the historical thinking skill of examining historiography might want to pay close attention to how the thinking about a certain historical period has changed over time, in light of new evidence.
The attitude was to stay strong over what anyone else said about lack people so by staying strong and taking tons of valuable sacrifices they helped end slavery.
The enemy was a disease that had spread throughout the camps killing over 11,000 soldiers.
