One artifact of the division between East & West Berlin can be seen from space in the lighting of the different halves of the city:
Even more stark, of course, is the divide between North and South Korea:
But none of this should be a surprise because there are artifacts of human divisions from hundreds of years ago that still express themselves in various ways today. Take this map of Poland that shows the electoral map of Poland in 2007 and the borders of the late 1800s - early 1900s German empire:
this map that shows areas of intense cotton production in 1860 and counties voting for Obama in 2008:
And there's more, always more, of this kind of thing.