I think it is both but i did that last year so idk
The Black Sea bordered the Eastern Roman Empire.
Vikings were the seafaring Norse people from southern Scandinavia (present-day Denmark, Norway and Sweden) who from the late 8th to late 11th centuries raided, pirated, traded and settled throughout parts of Europe
Explanation:
Difference between them are: Orogeny is a mountain building process while epeirogeny is a continent building process. ... In orogeny the rock masses move in tangential direction to the earth's surface while in epeirogeny the rock masses move in radial or vertical direction to the earth's surface.
She was from Vienna, Austria