Titus Flavius Vespasianus, commonly known as Vespasian, was a Roman emperor who ruled from 69 to 79 AD. He was the founder of the Flavian dynasty and is known for restoring stability to the Roman Empire after a period of civil war. Vespasian was also responsible for initiating several construction projects, including the building of the Colosseum in Rome. He is often remembered as a capable and pragmatic ruler who brought about economic and administrative reforms to the empire.