Who was Abraham Lincoln's vice president from 1861 to 1865?

Which 1857 song includes the line "Bells on bob tail ring"? In 1859, which future author received his Mississippi steamboat pilot's license? In 1860, Christopher Spencer patented which breech-loading repeating weapon? Which 1860s novel features Prince Andrei Bolkonsky and Natasha Rostova? In 1861, which state's secession prompted Jefferson Davis to leave the U.S. Senate? Complete the title of Ivan Turgenev's 1862 novel: "___ and Sons". In 1862, Lincoln removed which general as commander of the Army of the Potomac? The 1862 Second Battle of Bull Run was part of which war?