MAP  OF  ROMAN  EMPIRE  IN   117 AD

Source  -  Long's Classical Atlas  -  1867  -   Plate 4

Map showing the maximum extant of the Roman Empire,  in 117 AD;   when  Emperor Trajan called a halt to further conquest and expansion.  At that time,  one could travel from northern Britain through Europe into Asia Minor and Egypt;  using one language,  one currency,  and one passport.    Forty modern nations now occupy the region once ruled by Ancient Rome.