[quote=@Meta]
<Snipped quote by Stabby>

How is any aspect more developed than another?
[/quote]

Available resources, environmental and political stability, extinction event frequency, and even the availability or lack thereof of magic/an equivalent among other things can attribute to how quickly, widely, or deeply developed a location or society can become. Time can also run at different paces in different dimensions so that can also be counted as an attributing factor as well.