Imagine a world with countries reshaped to have an equal population with each other. Some little countries get absorbed to create one large country while other populous countries get their boundaries re-drawn and are split up into lots of different pieces (I'm looking at you China and India).
The map was made by Redditor DMan9797. You can see most of the countries in the frigid north need more land to reach a 100 million people while countries near the middle are divvied up into tiny puzzle pieces. Some of those regions in Asia are no bigger than some US states. For a closer look, a larger version of the map can be found here.