xerxes

Constantine never split the empire in two. The first to do that was Dicoltian and that was for the duel administrative purposes of Caesar-August ruling each half. After Constantin's death, the republic split into three parts, and not two. Contantine had nothing to do with that, he merely transfered the capital from Eternal Rome to Byzantuim, where he could have a closer view of Rome's richest provinces.

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If we contrast the rapid progress of this mischievous discovery of gunpowder with the slow and laborious advances of reason, science, and the arts of peace, a philosopher, according to his temper, will laugh or weep at the folly of mankind. - Edward Gibbon