Answer:
Invading southward from the Baltic Sea, the Ostrogoths built up a huge empire stretching from the Don to the Dniester rivers (in present-day Ukraine) and from the Black Sea to the Pripet Marshes (southern Belarus).
Arabia Petraea: for the area that is today southern modern Syria, Jordan, the Sinai Peninsula and northwestern Saudi Arabia. It was the only one that became a province, with Petra as its capital.
Step-by-step explanation: