The 4th century, spanning from the year 301 to 400, was a significant period in history marked by the rise of the Roman Empire and the spread of Christianity. During this time, the empire faced internal challenges and external threats, leading to important political changes and military conflicts. In 313, the Edict of Milan was issued, granting religious tolerance to Christians and allowing the faith to flourish. This century also saw the work of influential figures like Saint Augustine, whose writings shaped Christian theology. The 4th century laid the groundwork for the transition from paganism to Christianity in Europe.