Which event took place less than a week after the Robert E. Lee's surrender to Ulysses S. Grant? A. President Abraham Lincoln was re-elected to his second term. B. Secretary of State William Seward purchased Alaska from Russia.
C. The 13th Amendment, which abolished slavery in the U. S., was ratified. D. President Abraham Lincoln was assassinated by John Wilkes Booth.​

Over time, historians have changed the ways they study the past because they have: o a. emphasized the study of oral history passed down in communities for generations. o b. started to explore history through the perspectives of many different groups. c. focused on uncovering archaeological evidence rather than analyzing documents. d. largely abandoned studying comparative and cultural history in favor of microhistory.