I believe the answer would be Phalanx.
William McKinley was the 25th president
Answer:
It was created after the event took place
Explanation:
There are two types of sources in history, primary and secondary.
Mount Vesuvius erupted in AD 79 while the painter painted it on the oil canvas in 1812. The painter was not present during the event, the painting is an imaginary depiction of the eruption, so it is a secondary source.
If the same painting was created by someone who was present when the volcano erupted, then it would have been considered as primary source.
It was one of the masterpieces that has been created by human beings which was a symbol of victory, liberalization and dignity.
There might be more but here is the answer I gave you
