The correct answer is: The North and South were equally matched at sea.
The battle between Merrimack and the Monitor happened on March 8th, 1862 during the American Civil War, it happened in Hampton Roads in reach of Chesapeake Bay. No one won the battle exactly because North and South were equally matched at sea.
This battle was the first between two steam-powered ships. The monitor was the ship owned by the Union and Merrimac was a Confederate ship also known as “Virginia”. Both ships were a major advancement in technology.