The history of the Roman Empire begins with the overthrow of foreign kings in 509 BCE. But Romans like to date the history of their city to 753 BCE. That is when a legendary hero called Romulus is said to have founded Rome.
A legend is a popular story from earlier times that cannot be proved. The legend about Rome's founding begins with Aeneas, a hero of the Trojan War. According to the legend, Aeneas settled in Italy after Troy was destroyed.