But you have to say the shape of Serbia is much nicer with Kosovo, right?
Czechoslovakia. The name is self explanatory, in a way.
Spain and Portugal were united once, as the Iberian Union.
Sudan used to control South Sudan.
Laos and Cambodia were the remains of French Indochina after Vietnam gained independence.
And Haiti once took over the D.R. (or maybe vice versa)
So, some of these are just... unnatural that they were made this way
(this is GeoSmartKirbyXD typing)