Rome gained power with Hellenistic culture incorporated into the daily lives of Romans. One of the greatest technological advances was the idea of ​​concrete in construction engineering. This concrete idea began in southern Italy in the 2nd century BC. Concrete was very important to Roman architecture as it helped in the creation of Roman arches and domes. Concrete was also the basis of stone bridges over rivers, superimposed aqueducts across valleys, and large tourist buildings such as the Pantheon in Rome and later the Hagia Sophia Cathedral in Constantinople. Those buildings used domed roofs to enclose a large amount of space. These types of buildings were larger in size than any other buildings until the 16th century. Another technological innovation was the Roman roads. It can be said that Roman engineers were highly skilled because the roads ran for miles. Not only were they long, but they covered all different types of topography and cleverly and effectively connected all parts of the Roman Empire. TO accomplish such a grandiose work, Roman engineers had to adopt advanced techniques and use advanced tools to create street corners. The Romans also created a machine for grinding corn. At first it was only done by hand. Machines were used with the help of animal power to grind grain in the 2nd century