Pre-Roman
The area which Essex now occupies was ruled pre-Roman settlement by the Celtic Trinovantes tribe. A dispute between them and another tribe was used as an excuse for a Roman invasion in 55 BC, and they allied with Rome when Claudius returned in 49 AD. This led to Camulodunum (Colchester) transferring from the Trinovantes to the Roman Empire as the capital of Roman Britain. The Trinovantes later fought with the Iceni tribe against Roman rule as the Romans did not accept that in the Iceni tradition women could be rulers and therefore after Boudicca became ruler they sought to take power which was not part of the agreement that they had come to
Read more about this topic: History Of Essex