Both maps below show Vietnam highlighted. At 17° Mercator inflates Vietnam by only about 9%, so the two maps largely agree on it. Watch what the old map does to Myanmar beside it. That contrast is why the new world map matters.
At 17°, Vietnam sits in the band the old map drew almost honestly. It is one of the regions Mercator quietly under-represented, and that is exactly what the new Equal Earth map restores.
Vietnam: key figures
| True area | On the old Mercator map | Distortion vs truth |
|---|
| Vietnam | 331,340 km² | 360,564 km² | 1.1× |
| Greenland | 2,166,086 km² | 25,576,494 km² | 11.8× |
| Africa | 30,370,000 km² | n/a | n/a |
Old maps drew Vietnam at about 360,564 km². The truth is 331,340 km², a difference of 9% that school atlases carried for centuries.