The Drow were seen as a really mean group by everyone. They were
always up to no good, playing tricks and causing problems with other
groups of creatures. People thought of them like the bad guys, and
if they were found near where humans lived, they'd be taken away by
the police right away.
People treated the Drows so badly that they stopped talking to other
civilizations. For many, many years, humans and Drows fought many
wars against each other. The last big war between humans and Drows
ended years ago. Now, humans and Drows hardly ever see each other
because there's peace between them.