How did the vacuum packed canning change society? And does anyone know how long this invention lasted before it for replaced?

Answer 1

Vacuum packed canning preserved food so that it didn't spoiled. It was better than drying or salting food to preserve it.

We still have vacuum packed cans.

Answer 2

Oh, ok thanks. I have another question though. What were the different types of labor or jobs that were created in order to invent the invention?