Answer :
The invasions of the Roman Empire from the East were from the Turks and the Ottoman Empire (C). This led to the fall of the eastern portion of the Roman Empire.
Answer:
a. the Persians
Explanation:
The Roman-Persian war lasted for over 600 years and confrented the persian and Roman empire over the territory of mesopotamia. They went on and on, winning and loosing key cities from the 92 BC to the 627 AC, this is the third longest war in the history of the world, and they were the first to attack the Roman empire to the East, but not the last, since the Turks attacked them from the east but ultimately defeated the Roman empire and starting their fall.
