The Second Council of Ephesus, held in 449 AD, was an important church assembly in the early Christian era. It aimed to address the ongoing theological disputes regarding the nature of Christ, particularly the teachings of Eutyches, who argued that Christ's divine and human natures were merged into one. This council ultimately supported Eutyches' views, leading to significant controversy within the church. The council was convened by Emperor Theodosius II and was marked by a lack of proper representation from the opposing side, particularly the followers of Flavian, the Patriarch of Constantinople. The decisions made at this council were later deemed invalid by the Third Council of Ephesus in 431 AD, which reaffirmed the importance of both Christ's divine and human natures.