Newsweek has analyzed the latest available data and the Open Borders Index to create a map showing countries worldwide ... The index was created together by the World Economic Forum to highlight ...

The map shows Mesopotamia surrounded by a double ring — which the ancient scribe labeled the “bitter river,” a river that created the borders around the Babylonians’ known world.

World War I involved 32 nations from 1914 to 1919. It redrew the world map and reshaped many borders in Europe. The collapse of the Russian Empire created Poland, the Baltics, and Finland.