In 335 AD, the Roman Empire was under the rule of Emperor Constantine the Great, who is known for being the first Roman emperor to convert to Christianity. This year marked significant developments in the early Christian church, including the gathering of the First Council of Nicaea, which aimed to address various theological disputes and establish a unified Christian doctrine. The council produced the Nicene Creed, a statement of faith that is still used in many Christian denominations today. Additionally, 335 AD saw the construction of important churches, such as the Church of the Holy Sepulchre in Jerusalem, which became a major pilgrimage site for Christians.