
Vis S. answered 01/16/24
Experienced geographer with classroom and practical GIS experience
No map projection can accurately depict every country's size and shape due to the distortion inherent in converting the Earth's curved surface onto a flat map. This distortion arises from the challenge of representing a three-dimensional object on a two-dimensional surface. Different map projections prioritize different aspects, such as maintaining shape, area, or distance accuracy.
As you noted, the Mercator projection was historically favored for its ability to preserve angles and aid navigation, but it distorts the relative sizes of land masses, with Greenland appearing similar in size to Africa, even though Africa is actually about 14 times larger. On the other hand, projections such as the Peters projection or the Eckert IV projection attempt to provide a more accurate representation of land area by sacrificing shape accuracy. These projections try to minimize the distortion of size, but in doing so, they can make countries appear stretched or compressed.
Cartographers continue to develop and refine new map projections that aim to balance various distortions. However, it is impossible to create a perfect map that accurately represents every country's size, shape, and location on a two-dimensional surface. When studying global geography, it is often helpful to use a variety of map projections and reference sources to gain a more comprehensive understanding.