Answer:1.
By the end of the war, much of the South's infrastructure was destroyed, especially its railroads. The Confederacy collapsed, slavery was abolished, and four million enslaved black people were freed.
2.Because of this, primary sources usually reflect the viewpoint of the participant or observer. Common primary sources for U.S. slavery topics include: Slave narratives. Diaries, letters, and biographies.
3.
To gain admittance to the Union, Congress required Southern states to draft new constitutions guaranteeing African-American men the right to vote. The constitutions also had to ratify the Fourteenth Amendment, which granted African Americans equal protection under the law.
Explanation: