Some contries can usurper names as Mauritania as a moder country and a roman province, Palestine was a roman province and Palestine (Gaza Strip and West Bank), Ghana and the ancient Ghana Empire, F.Y.R.O.M and Greek Macedonia.... the same name it´s not always the same country... And sometime some countries change the names....
I remember one tratate Morocco-Spain in 1880`s ,,, the sultan wrote..I haven got anyright to the south of Draa River....