What was Romes greatest scientific or technological advance?

Rome's greatest scientific and technological advance was the development of concrete, which revolutionized construction and architecture. This durable material allowed for the creation of impressive structures such as the Pantheon and the Colosseum, enabling the Romans to build large, enduring edifices. Additionally, their advances in engineering, including aqueducts and roads, facilitated urban development and the efficient movement of goods and people across the empire. These innovations laid the foundation for future architectural and engineering practices.