From what little i know, They split the empire up into 2 sections with 2 separate emperors
Well I don't know what era you're studying, but that's almost certainly false.
The minority groups are usually treated unequally by the dominant groups, as if there are say 90% White Caucasians and 10% Black Africans, the White Caucasians are likely to treat the 10% harshly as they're different.
D. Speak their native language
Ill say the answer would be National Republicans and Democrats
