To represent flatness, I think it would be better to use a different quantifier than this. This only represents the difference between high and low points and has nothing to do with how much land is flat. If we used this metric for a country like India, it would rank as one of the least flat countries, but that wouldn’t be representative of much of the country. We need a different title for this map IMO.

That is a terrible legend. Let me get my microscope to differentiate the colours in that razor edge 🧐

Kentucky and Tennessee are labeled backwards. Though they seem to be colored correctly.