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Constantine the Great became emperor after the death of his father, Constantius Chlorus. Constantine's reign marked significant changes, including the promotion of Christianity.

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Constantine's victory at this battle established him as the sole ruler of the Western Roman Empire. He attributed his success to divine intervention, leading to his conversion to Christianity.

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Constantine issued the Edict of Milan, granting religious tolerance throughout the empire and ending the persecution of Christians.

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324 A.D.: Constantine Becomes Sole Emperor

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324 A.D.: Constantine Becomes Sole Emperor

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After defeating Licinius, Constantine became the sole ruler of the entire Roman Empire, leading to a temporary period of stability.

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Constantine established a new capital at Byzantium, renaming it Constantinople. This city would later become the heart of the Byzantine Empire.

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337 A.D.: Death of Constantine the Great

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337 A.D.: Death of Constantine the Great

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Constantine's death led to a period of instability as his three sons divided the empire among themselves, resulting in internal conflict.

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363 A.D.: Julian's Failed Campaign Against Persia

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363 A.D.: Julian's Failed Campaign Against Persia

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Emperor Julian's military campaign against Persia ended in failure, weakening the Roman military and leaving the empire vulnerable.

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The Huns' invasion forced many Germanic tribes to flee into Roman territory, leading to increased pressure on the empire's borders.

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The Visigoths defeated the Roman army, killing Emperor Valens. This battle marked one of the crucial events leading to the empire's decline.

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395 A.D.: Theodosius I's Death and Division of the Empire

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395 A.D.: Theodosius I's Death and Division of the Empire

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The death of Theodosius I led to the permanent division of the empire into Eastern and Western halves, further weakening the Roman state.