Theodosius. Theodosius I, also called Theodosius the Great, was Roman emperor from 379 to 395.
   During his reign, he faced and overcame a war against the Goths and two civil wars, and was key in establishing the creed of Nicaea as the orthodoxy for Christianity. Theodosius was also the last emperor to rule the entire Roman Empire before its administration was permanently split between two separate courts, one western, the other eastern.
   Born in Hispania, Theodosius was the son of a high-ranking general, under whose guidance he rose through the ranks of the army. In 374 Theodosius held an independent command in Moesia, where he had some success against invading Sarmatians.
   Not long afterwards, he was forced into retirement and his father was executed under obscure circumstances, but Theodosius soon regained his position following some intrigues and executions at the emperor Gratian's court. In 379, after the eastern Roman emperor Valens perished at the Battle of Adrianople against the Goths, Gratian appointed Theodosius to succeed him and take charge of the military emergency.
   The new emperor's resources and depleted armies were not sufficient to drive the invaders out, and, in 382, the Goths were allowed to settle south of the Danube as autonomous allies of the Empire. In 386, Theodosius signed a treaty with the Sasanian Empire, which partitioned the long-disputed Kingdom of Armenia and sec
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