I am particularly fascinated by the small topological map. I like imagining what Mars would be like under Earth-like conditions - if a watery planet looked like

I am particularly fascinated by the small topological map. I like imagining what Mars would be like under Earth-like conditions - if a watery planet looked like that, how would people live? Where would the population be most concentrated? How would the political landscape be influenced by the geography? I guess I spent too much of my childhood playing Role Master :-)