It was Theodora - wife of deceased EmperorTheophilus, who was regent, while Michael III was still an infant. It put an end to Iconoclasm schism, and since then icon veneration is one of the pillars of Orthodox religion.
Empress Theodora restored the veneration of icons in 843 CE after her husband, Emperor Theophilus, died. This action ended the Iconoclast Controversy and solidified the importance of icons in Orthodox Christianity, leading to the celebration known as the Feast of Orthodoxy. Her leadership marked a significant turning point in Byzantine religious practices.
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