[sagonar]

My counter example is slavery, which would lead to a very big wealth gap. I think that large slavery state or system would need metal working, but will guess it has existed without.

[donw]

Yes, but what does slavery have to do with technology...? I don't understand the connection to the parent post.

[bawolff]

Probably you need at least farming so you have something for your slaves to work on that can scale easily.