The main concern of historiography is bias.
Answer:
The Pearl Harbor Bombings
Explanation:
The Japanese air force bombed the naval base at Pearl Harbor on December 7th, 1941. This brought the United States of America into World War 2, which eventually led to the nuking of Hiroshima and Nagasaki.
Question- What did General McClellan’s Army of the Potomac try to achieve with the Peninsula Campaign?
Answer- General George McClellan was a leading Union commander in 1862 when he built and then led the Army of the Potomac in an attempt to capture Richmond, Virginia, which resulted in the Peninsula Campaign, stretching from March to August, 1862.
The third one down would be right