Byzantine empresses played a significant role in the Byzantine Empire, which lasted from 330 to 1453 AD. They were often influential in politics, culture, and religion, serving as advisors to their husbands, the emperors. Some empresses, like Theodora, wife of Justinian I, were known for their intelligence and political acumen, helping to shape laws and policies. Many empresses were also patrons of the arts and religion, commissioning churches and mosaics that reflected the empire's rich culture. They often held power in their own right, especially during times of crisis, and their legacies continue to be studied for their impact on Byzantine history.