Almost every flag in the extensive collection of world flags is recognizable as rectangular. But among all the nations, there are two exceptions—nations with perfect squares for their official flags.

Flags are more than colorful backdrops at sporting events. They're history lessons stitched into symbolic rectangles. Every design reflects geography, revolutions, politics, and ideals a country ...

A geography quiz like this will quickly test how well you really know the world. For this challenge, you’ll need strong flag ...