Answer:
On November 1, 1861, President Abraham Lincoln names George Brinton McClellan general in chief of the Union army, replacing the aged and infirm Winfield Scott.
Military Conflict: Battle of Antietam
Explanation:
it is b. Harriet Tubman was an abolitionist.
Answer:
The Yalta Conference
Explanation:
The Yalta Conference, also known as the Crimea Conference and codenamed Argonaut, held February 4–11, 1945, was the World War II meeting of the heads of government of the United States, the United Kingdom, and the Soviet Union to discuss the postwar reorganization of Germany and Europe.
It would be B.two witness