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.
The idea that people within a state can and should determine the laws within that state is referred to as <span>popular sovereignty. </span>
Probably to either to team up for a common goal or to oversee the trades in their area.
Your answer to this would be Albrecht Durer
