10 Inventions That Changed the World

[Methmatician]

"The world's oldest wooden wheel, dating from 5,250 ± 100 BP, ..."
http://en.wikipedia.org/wiki/Wheel#History

"Radiocarbon dating, performed in the VERA laboratory (Vienna Environmental Research Accelerator) in Vienna, showed that it is 5,250 ± 100 years old, which makes it the oldest wooden wheel discovered by archeologists in the world."
http://en.wikipedia.org/wiki/Ljublja...s_Wooden_Wheel

I don't know if Sido knew, but we were talking about the wheel as transport. I already knew circles existed.

[el22]

Sido has a point. When you discover an artifact, and assuming you are able to evaluate it's date, you can't say "it was invented then". This expression implies that you know for sure it didn't exist before. But how can you possibly know that?
The less speculative (and correct) way to name it, is: "It existed at least since then".

[Sisak]

The most important invention was the fence/wall. Private property created Civilsation and everything that went along with it including writing, farming etc

I think this is true. If we looks which were great civilizations, they were the ones who had the fortified cities, and in the Balkans, there were villages with a fence (Sopot culture) in Croatia.

I would like to add more to this list and these ships found in Croatia in city of Vukovar:
Virtual reconstruction VUCEDOL II. of 3500 year old prehistoric logboat located in Vukovar, Croatia. Logboat was reconstructed by original logboats:

http://www.youtube.com/watch?v=EwzJtj4kczc