By the end of 1945, the bombing had killed an estimated 140,000 people in Hiroshima, and a further 74,000 in Nagasaki. In the years that followed, many of the survivors would face leukemia, cancer, or other terrible side effects from the radiation.
Answer: Isolationism and Neutrality
Explanation:
The policies that prevented the USA from entering WW1 in its first 3 years were Isolationism and Neutrality
Well looking the answer choices A is incorrect because Davis supported the south and slavery, and he believed Lincoln would try to end slavery. Now let’s look at B, which is also incorrect, Davis feared this would lead to war so he didn’t support it. Now C, C is also incorrect because as we already know he does not wish to go to war. This leave us with D the correct and only answer.