[quote=@TheSovereignGrave]
Eh, I'm not so sure about the civilization having just gone from hunter-gatherer lifestyles to settled ones. I think we should start off more like in the Bronze Age, with our cities just starting to sort of come to prominence. I mean, I'm not saying everything needs to be totally accurate, but the dawn of agriculture and the iron age were several thousands of years apart.
[/quote]

And yet again Sovereign raises another good point: time frame. 

Human civilisation has been around for what? 6000 or so years?

And look how far we've come; Christ almighty. Things were real sluggish for the first part, and only in the last couple of thousand years have we really been achieving anything - and then even that's debatable. 

So if we follow Earth's chronology of events, it would take several Evolution Phases to really get anywhere as far as technology is considered. This could be solvable by making the evolution phase last a thousand years - but that's a huge, huge leap. 

So perhaps we can start in the Bronze Age, for as Wiki states:

"The Bronze Age is a time period characterized by the use of bronze, proto-writing, and other early features of urban civilization. The Bronze Age is the second principal period of the three-age Stone-Bronze-Iron system, as proposed in modern times by Christian Jürgensen Thomsen, for classifying and studying ancient societies."