Tiberious and Germanicus were part of what empire?
Germanicus: Germanicus (24 May 15 BC – 10 October AD 19), formally Germanicus Julius Caesar, was heir-designate of the Roman Empire under Tiberius and a prominent general known for his campaigns in Germania. Tiberius: Tiberius (Latin: "Tiberius Caesar Dīvī Augustī Fīlius Augustus" ; 16 November 42 BC – 16 March 37 AD) was a Roman emperor from 14 AD to 37 AD.
Roman Empire