According to legend, Rome was founded in 753 BC by the twin brothers Romulus and Remus, who were raised by a she-wolf. Romulus became Rome's first king after killing his brother Remus. The Roman Senate was established by Romulus and was originally composed of 300 members who controlled finances and foreign policy. Rome continued expanding its power and by 275 BC had defeated King Pyrrhus of Epirus, gaining supremacy in Italy.