The term "Roman Dynasties" refers to the series of ruling families that governed the ancient Roman Empire. Notable dynasties include the Julio-Claudian dynasty, which began with Julius Caesar and included emperors like Augustus and Nero. This period was marked by significant political and social changes. Another important dynasty was the Flavian dynasty, known for constructing the Colosseum and expanding the empire. The Severan dynasty followed, characterized by military expansion and internal strife. Each dynasty played a crucial role in shaping the history and culture of Rome, influencing governance and society for centuries.