What was the significance of the Lateran Synod?

The Lateran Synod, held in 1123, was significant as it marked the first ecumenical council recognized by the papacy after the Investiture Controversy, which was a conflict between the church and secular rulers over the appointment of bishops. The synod addressed key issues such as the reform of clerical conduct, the establishment of the church's authority, and the prohibition of lay investiture. It underscored the growing power of the papacy and set the stage for future church reforms, reinforcing the separation of ecclesiastical and secular powers. This council also helped to unify the church's stance on various theological and administrative matters.