How Did Vespasian Build The Colosseum?

My favorite emperor of ancient Rome is Vespasian, who reigned during 69-79 A.D. After the reign of Nero (51-69 A.D.) the Roman Empire faced an uncertain future. There was no heir to the throne and the rule of the emperor was left up for grabs (39:40). Vespasian, a military commander not from royal blood, was proclaimed emperor by his troops. He had much experience in political and military tactics. He worked hard to restore law, order and self-respect to Rome after the city was left in terror after Nero’s reign. Vespasian was anti-Nero and was said to be a practical kind of man. Vespasian was praised for the restoration of peace in the region, and for building his many public works such as the Colosseum. He was a positive model for future emperors by keeping the strong Roman tradition in tact, yet still conquering new lands and further expanding the empire.
The Colosseum, originally known as the Flavian Amphitheatre, is the largest amphitheater ever built and is often said to be one of the greatest works of architecture and engineering. It can hold over 50, 000 people at one time. Construction began in 70 A.D. under the reign of Emperor Vespasian, located in the center of the city. Unfortunately, Vespasian did not live to see the project completed. His oldest son, Titus, became Emperor after his father's reign. Emperor Titus saw to it that the Colosseum was completed. The Colosseum officially opened in 80