Represents the area known as ground zero in world war ii?

I think ground zero was Hiroshima and Nagasaki aka the places where the nuclear bombs were dropped
 

Ifound this on google “simply, the working conditions were terrible during the industrial revolution. as factories were being built, businesses were in need of workers. with a long line of people willing to work, employers could set wages as low as they wanted because people were willing to do work as long as they got paid.” i hope this you for what your looking for.