By this, I mean, have you been to a place that no longer exists? The most likely, for Vietnam vets, would be North and South Vietnam, now a united Vietnam. Other common places, that no longer exist would be Rhodesia (now Zimbabwe), the USSR, Czechoslovakia (now Slovakia and Czech Republic), Yugoslavia (now Slovenia and Croatia), and East and West Germany (now Germany). Contrast this to places whose names have changed from their colonial names. These are places like Myanmar (formerly Burma), the Democratic Republic of the Congo (Belgian Congo), Thailand (Siam), Bolivia (Charcas), Burkina Faso (Republic of Upper Volta), or Armenia (Hayastan). The border is essentially the same, but the names have been changed. Here is some background (from Exploring) information: Yugoslavia ('Land of Southern Slavs') came into being in 1918 following the collapse of Austria-Hungary.
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