Answer:
1) Abraham Lincoln faced the collapse of the union and the abolition of slavery as president
2) Jefferson Davis (1808-1889) was a Mexican war hero, U.S. senator of war and president of the confederate states of war and president of the Confederate states of America for the duration of the American Cilvil War
3) Davis faced difficulties throughout the war as he struggled to manage the southern war effort maintain control the confederate economy and keep new nations united.
Explanation:
Poor and unkept. They threatened to take jobs away due to the numbers and made Americans worry about crime rates.
Answer: The theory that the earth revolves around the sun
