Rep Tatius and Tarpeia

4.This Roman Republican coin commemorates far earlier Roman history, showing on its reverse, the traitoress, Tarpeia, daughter of the Roman commander,who opened the gates of Rome to the enemy. a) Who were the enemy to which she betrayed Rome? b) What was the name of the enemy King? c) The Tarpeian Rock on the Capitoline Hill became a place used for what ?