Rhea Silvia gave birth to her two sons, Romulus and Remus. After the birth she was sentenced to prison and the twins were sentenced to be killed.
Remus: This wall is so bad, I can jump over it.
The servant who was supposed to kill the twins couldn't kill them, so he put them in a basket and let them flow down the river.
Romulus and Remus where found by a Shepard and his wife and they took care of them until adulthood. Once they reached adulthood King Amulius came after Romulus and Remus, but they defeated him. They were offered the option to rule over the people, but they decided to make there own town instead.
Once Romulus and Remus started to make their own city, Remus made fun of Romulus's wall, so Remus jumped over it, and Romulus angered by Remus's foolishness, killed Remus.
After his brothers death, Romulus built his own city of Roma. The city was filled with men and few women lived there, so Roma kidnapped women from a neighboring town. The towns went to war and Roma won. This brought the uprising of Roma.
There are many different suspicions on how Romulus dies, but he passed away around age 55. His town grew after his death into an empire.