Gideon V. Wainwright (which was part of the 6th amendment) it basically had to deal with right to counsel so that means that the poor people who can't really afford a lawyer has to get an assigned lawyer pronto.
The antislavery movement raised and grew because people kept finding reasons for why slavery is bad. This eventually led to conflict between people against slavery and people for slavery. Another reason why the antislavery movement raised and grew was because slavery has become less useful overtime, as we have machines.
D) issues important to the population that people want addressed by the government
Issues that are noticed by the political community as deserving public attention and governmental action
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The Olmec civilization was located in "MesoAmerica," since they were located in an area that is now part of present-day Mexico (although the borders are significantly different now).
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.