According to legend, the city of Rome was founded in 753 BC by Romulus and Remus. Romulus killed Remus and became Rome's first king, establishing the city's first government. Rome grew from a small settlement populated by outcasts and criminals to a major city due to its advantageous location on the Tiber River and by adopting aspects of culture and religion from neighboring Greeks and Etruscans. The Roman Republic was established in 509 BC after the last Etruscan king was overthrown. The Republic was governed by elected consuls and an advisory Senate dominated by patrician families, though political reforms over time increased power for plebeian commoners.