Answer:
The Persian Empire was an empire that stretched from India to Europe from 550 B.C.E. to 331 B.C.E. It was ruled by a series of monarchs. An empire is defined as a geographically extensive set of states or peoples that are ruled either by a monarch or by an oligarchy, a small group of ruling elites.
Explanation:
The answer is A: Constantine recognized the legality of Christianity. This was the biggest change in the Roman Empire to date. Constantine had a change of heart due to a dream he was seen by Jesus- and that is the result he became Christian. In addition, 'the great schism' was a barrier that Constantine and pope were separated (both which they agreed on) due to different ethnicities, languages & culture.
The great schism chart
Constantine's side
East side- middle easterners, Egyptians, turkey
Languages- turkish, Arabica
Pope's side
West side- Rome, Italy
Language- Latin
1=the truth of suffering, 2=the truth of the cause of suffering, 3=the truth of the end of suffering, and 4=the truth of the path that leads to the end of suffering.