Answer:

Explanation:
After the Civil War and 13th Amendment, slavery was abolished from the United States. This left 4 million former slaves or freedmen to fend for themselves while looking for jobs, homes, and educations during the period of Reconstruction.
The Freedmen's Bureau was created by the government to help the freedmen transition. They helped tons of former slaves through meals, healthcare, labor contracts, and the building/funding of schools and colleges.
They attempted to redistribute land (choice C) but most efforts were unsuccessful and it wasn't the main purpose. It was not created for suffrage (choice B) or to help prospective politicians (choice D). This leaves choice A as the best answer.
Answer:
Other than to succeed to the presidency upon the death or resignation of a president, a vice president's only constitutional duty is to preside over the Senate. Vice presidents cannot vote in the Senate, except to break a tie, nor may they formally address the Senate, except with the senators' permission.
Explanation:
<span>During the Agricultural Revolution, new patterns of crop rotation and livestock utilization paved the way for better crop yields, a greater diversity of wheat and vegetables and the ability to support more livestock. These changes impacted society as the population became better nourished and healthier.</span>
The battle you are referring to is actually called the Battle of the Ironclads. In this battle, it was the Merrimac (from the Confederacy) versus the USS Monitor (from the Union). This was the first battle between iron-fortified vessels in the Civil War. This battle ended up in a draw but represented a new form of fighting that both the Union and Confederacy had to be ready for.