Answer:
Mercator projection
Explanation:
Using a flat paper map to represent the sphere that is our planet has always been a challenge. The Mercator projection is one of the most common representation, although we know it is more accurate around the Equator line and the precision diminishes as you get closer to the poles.
There are other types of projections, correcting some issues, but with their own flaws too. The only accurate representation of the planet is a globe, since it matches the shape of the planet.
To be frank, I don't think your question is specific enough, but I would say that the answer would be the Rocky mountains, or just mountains. those are the only major kinds of landforms I can think of