Why was St Augustine called St Augustine of Hippo?

St. Augustine is called St. Augustine of Hippo because he served as the bishop of Hippo Regius, a city in present-day Algeria, during the late 4th and early 5th centuries. His theological writings, particularly on topics such as original sin and grace, significantly influenced Western Christianity. The title "of Hippo" distinguishes him from other saints named Augustine and highlights his important role in the church in that region.