Population differences between the North and South prior to the Civil War was in part due to
A new job availabilities in the South
B. settlers migrating north for land
C. the increase in birth rate in the South
D. immigrants tending to settle in the North

your answer is D

immigrants tending to settle in the north

the correct answer is to reduce tax

geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to