There was many different stories on how Romulus and Remus were born. But the author claims that Rhea was raped by an unknown man and blamed her pregnancy on divine conception
Death of Remus & Founding of Rome
The twins were put in a basket and floated down the river and got snagged by some roots. A she-wolf Lupa suckled them and they were fed by a wood pecker. Eventually they were found by a shepherd and he took care of them
Beginning of Rome
The argument between them on where their city should be resulted to them making their own cities away from each other.
Death of Romulus
Remus kept jumping over his brothers walls to make him angry so his brother killed him and founded his own city and called it Rome after himself
He put in his own government system. And as his system of government grew with his city and grew with him. His population mostly consisted of run away saves, fugitives, criminals, exiles, and other cast offs.
There was many different stories to how he died in one he became a god in another he got lost in a storm in conclusion we don"t really know how he died.