The Fourth Lateran Council was an important assembly of the Roman Catholic Church held in 1215, convened by Pope Innocent III. It aimed to address various issues within the Church and to reform its practices. The council produced several decrees, including the definition of the doctrine of transubstantiation, which explains how bread and wine become the body and blood of Christ during the Eucharist. Additionally, the council established guidelines for clerical conduct and emphasized the need for the Church to maintain moral integrity. It also addressed the relationship between the Church and secular authorities, reinforcing the Church's influence in political matters across Europe.