For this, I need opinions. Working on an anthology set within a specific setting, most people travel across lands by use of portals. And due the ancestral political and technological state of the lands and Balkinization the numerous nations within the lands all have varying levels of technology. Some more advanced than us, others are little more than glorified bronze smiths. Pretty every body knows about stuff like cell phones, but not every one may have the chance to own them. During a single persons lifetime, their country could literally advance from the Bronze Age to space age FTL. However, they could also regress. Despite roughly 20k years of globalisation, the world is still being colonized (as in completely uninhabited land, Australia when the aborigines landed there), nations still are making first contact with completely new cultures and countries. There is no novelty, no real technological advancements have been made, uninhabited lands were inhabited before their inhabitants died out. Land and resources seem infinite, except when within your own borders. With thousands of nations, quadrillions of people, a literally immeasurable amount of land, terrifying diseases, cures for everything (except death and life), nuclear bombs, high tech radiation cleaning, etc, etc. If that was the world we lived in, where a nation of bronzesmiths could become a nation of astronauts in a single generation (and vice versa), what would be your most powerful fears and aspirations?