Romulus and Remus then decided to found their own city. They chose a spot on the banks of the Tiber River, and Romulus began to build a wall around the city. However, Remus mocked the wall, saying that it was too small and easy to climb. In anger, Romulus killed Remus, and he went on to complete the city of Rome.
Of course, this is just a myth. The real story of how Rome was founded is much more complex and uncertain. It is likely that the city was founded by a group of people from different tribes who came to live in the area around the Tiber River. Over time, these people developed a common culture and identity, and they eventually came to be known as Romans.