The Council of Nicea was a significant assembly of Christian bishops convened in 325 AD by the Roman Emperor Constantine I. Its primary purpose was to address the Arian controversy, which questioned the nature of Jesus Christ and his relationship to God the Father. The council produced the Nicene Creed, a statement of faith that affirmed the divinity of Christ and established a unified Christian doctrine. The council also addressed various church practices and established a method for determining the date of Easter. The decisions made at the Council of Nicea had a lasting impact on the development of early Christianity and helped to unify the church under a common belief system.