The European Union is set up with the aim of ending the frequent and bloody wars between neighbors , which culminated in the Second World War. As of 1950, the European Coal and Steel Community begins to unite European countries economically and politically in order to secure lasting peace.
This is not a tool that could be shown in a map. Remote sensors are instruments used in spacecrafts. On the other hand, all other options are actually part of a map to help to guide its user.
