What is this Article mainly about?
A. In the late 19th century, scholars began making
copies of the messages that appeared on walls all
over the city of Pompeii, and it's a good thing that
they took the time to do so, as more than 90
percent of the graffiti has worn away since the
ruins were first unearthed.
B. Just like today's social media users who post
messages on cyber walls, the residents of the
ancient Roman city of Pompeii posted messages
on actual walls that survived for millennia after
being buried in the rock and ash from the eruption
of nearby volcano, Mount Vesuvius.
C. The cause of the city of Pompeii's destruction was
also the reason for its preservation, as the debris
od the city and
