Amicitia

Amicitia is the Latin word for friendship, either between individuals, between the state and an individual or between states. It was "a technical term of Roman political life" from the 2nd century BC, when, according to Seneca, it was introduced by the Populares Gaius Gracchus and Marcus Livius Drusus, who thereby ranked their clientes. The clients and allies of the Roman state were called amici p... (Wikipedia)