Simplify the following text for a Grade 9 native English-speaking person.
Original: Orbetello was an ancient Etruscan settlement , which in 280 BC passed under the control of the Romans , who had founded their colony of Cosa ( near the modern Ansedonia ) .
Simplified: Orbetello was an ancient Etruscan village , which in 280 BC went under the control of the Romans , who had founded their colony of Cosa .