Under the emperors after Justinian, the chief concern of the Byzantine state was
(A) religious heresy and controversy.
(B) the over taxation of the peasants and frequent peasant rebellions.
(C) the defense against Slavs, Russians, and Arab invaders.
(D) the conversion of the Slavs to Christianity.
(E) the support of the arts, including new building projects such as the Hagia Sophia.
Answer: C