The merrimack and the monitor changed naal warfare because they engaged in the first battle between

A. metal covered ships
B. wooden ships
C. aircraft carriers
D. ships carrying guns

I say its B, please check.

No.

http://www.britannica.com/EBchecked/topic/389515/Battle-of-the-Monitor-and-Merrimack

Oh, so it's A

Right.

Be sure you check your text or use Google to double-check your answers in the future. That's always better than guessing!

It's helpful to read your text before you try to answer questions about it.

To confirm the correct answer, let's analyze the options:

A. Metal covered ships: The Merrimack and the Monitor were indeed the first two ironclad, metal-covered warships in history. Prior to their development, warships were made primarily of wood, making them vulnerable to enemy fire. Ironclads, on the other hand, had a layer of metal armor protecting their hulls, making them considerably stronger and more resilient.

B. Wooden ships: As mentioned earlier, the Merrimack and the Monitor were not wooden ships but rather ironclad vessels. Consequently, this answer option is incorrect.

C. Aircraft carriers: The concept of aircraft carriers did not exist during the time of the Merrimack and the Monitor. Aircraft carriers were introduced much later, in the early 20th century. Therefore, this option is incorrect.

D. Ships carrying guns: Although it is true that both the Merrimack and the Monitor were armed with guns, ships carrying guns were not a new development in naval warfare by the time of their battle. Gun-armed ships have been used in naval combat for centuries, so this option is not the best answer.

Based on this analysis, the correct answer is A. Metal covered ships. The Merrimack and the Monitor revolutionized naval warfare by being the first ironclad warships to engage in battle.