I agree. Ancient human territory grew organically. It sought resources and was constrained by difficult terrain. In the present, as well as the future, we have the capability to survey and map the world in three dimensions to within inches. It makes no sense to be constrained by obstacles that can be hopped over with a helicopter. Border growth should not be organic. It should seek to incorporate known resources without concern for the terrain type, except maybe miasma. Straight lines make perfect sense on this map interpretation of a planet.