Explain how ironclad ships gave the Northern navy an advantage over the South. please

Explanation:

Back then Ironclad ships were a huge advantage because they were immune to cannon balls the main weapon source of the time, The only thing that could take down an ironcald was another ironclad.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

bro where is your chart