One of the most significant historical figures to emerge during the 4th century was the Roman emperor Constantine the Great. He is credited to have restructured the government, separating civil and military authorities, bringing about a major change in the Roman Empire. In the same century, Samudragupta, the fourth ruler of the Gupta Empire vastly expanded the territories under his rule in the Asian region. It was during the same period that scientists, historians, and philosophers like Hypatia, Iamblichus, and Proclus enriched the world with their inventions and discoveries. This section gives you information about the life and works of famous people of the 4th century.