What is the best ever invention in your opinion?

[sinderella18]

Electricity, transport, WiFi, the list is long.

[abc3643]

The plow.
Without it, civilization would not exist.
The invention of the plow led to civilization about 12000 years ago.

Watch and learn:
"Connections: An Alternative View of Change" is a landmark 1978 BBC/PBS 8-part television series about the history of technological changes.
Episode 1 is "The Trigger Effect".
Host, BBC space journalist James Burke, begins by talking about the Great Blackout of 1965 and then asks what you would do if the power never came back on...
Then, midway through the episode, he shows you that animal-drawn plows led to the beginning of wide-scale agriculture, irrigation, and then, with surplus food, civilization.

https://www.youtube.com/watch?v=XetplHcM7aQ

[DryGermanGuy]

I will go with electricity:

https://www.youtube.com/embed/-DeESr05iT0

[jshm2]

Mathematics - the world would not be possible with it.

[LiamS95]

AC electricity and automobiles are tops on my list but you're correct the list could be endless.

[Awantika03]

Electricity 🔌

Because other all things are related with it.

[HungTexan]

The semiconductor.

[Ethan_T]

Toothbrush i hate stinky breath 🪥😬

[Wise4myage]

Electricity.

[hello4433]

Electricity!! 💯

[princeofromance]

Cars