Honestly I think it's the toilet, or even plumbing in general. I know it's not the most important but it's one that significantly improved a lot of peoples lives. Can you imagine living without plumbing?
Lots of people in poor areas of Asia live without plumbing.
Honestly I think it's the toilet, or even plumbing in general. I know it's not the most important but it's one that significantly improved a lot of peoples lives. Can you imagine living without plumbing?
Lots of people in poor areas of Asia live without plumbing.