Greatest Historiacal Accomplishment in the last 150 years?...

[Stuart G]

..This has happened everywhere &........ in 1870 it was nowhere.



....Indoor Running Water and Plumbing.. & that includes toilets too.

[brer cat]

1. I remember outhouses when I was a child.

My maternal grandparents had the first indoor plumbing in their county in rural west GA.

[Stuart G]

2. Thank You for posting above..I went to a boy schout camp in 1959...there was an outhouse

there.. Us boy scouts took turns at cleaning the inside and seat of the outhouse.....
If no one has done that, they have a lesson to be learned....also....While indoor plumbing is in most places
in the world, it is not .....everywhere!!!................

[Journeyman]

3. Far more important than indoor plumbing was chlorine disinfection of drinking water . . .

and the invention of reverse osmosis membrane filters. These two inventions alone combined to make clean drinking water a possibility for countless billions of people. Without them, you'd be drinking water on par with what's in your toilet.

[left-of-center2012]

4. "in 1870 it was nowhere" ... Well now, Google says otherwise

When Was Indoor Plumbing Invented?

1829 A.D.
Tremont Hotel of Boston was the first hotel of its kind to feature indoor plumbing for guests. Eight water closets were built by Isaiah Rogers.

1833 A.D.
The White House was first plumbed with running water on the main floor. Upstairs plumbing was later introduced when President Franklin Pierce was in office (1853-1857).

https://www.johncflood.com/blog/general/history-of-plumbing-timeline

Perhaps instead of saying "it was nowhere", it'd be more correct to say it was not in general use?

[ShazamIam]

5. A policy: The nations that mandated and delivered tax funded education for all their citizens.

That knowledge spread and exploded all areas of study and knowledge that lead to all the other great things.