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Petra is reduced by Trajan for assisting the Parthians against Rome. Palmyra moves to prominence as the great entrepôt of Oriental overland trade
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Trajan is remembered as a successful soldier-emperor who presided over the greatest military expansion in Roman.
The Roman empire was at it's highest and most successful point under emperor Trajan. -
Caracalla campaigns against Parthia with some success but is assassinated and replaced by Macrinus who meets severe military reverses
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Kingdom of Armenia is first nation to make Christianity a state religion
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Emperor Constantine made christianity legal after years of the religion being subjugated in the empire.
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Massive earthquake buried at least half of the city of Petra under rubble, remnants of the Nabataean civilization disappeared
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Rome finally fall after a raid from the Visigoths a the capital.
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Roman Catholics mustered an army to try and reclaim the Holy Lands from the Muslims. There were many crusades after.
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Another brief war with Romans follows Persian invasion of Syria. Narses is defeated; Tiridates, protégé of Rome, returns to his Armenian throne. The Tigris becomes the eastern border of the Roman empire; peace reigns between Persia and Rome until the reign of Constantine I
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Roman Empire is split into east and west with the death of Theodosius, who made Christianity the Roman empire's official religion
