How did the client kingdom of Prasutagus contribute to later conflict in Roman Britain?

The client kingdom of Prasutagus, king of the Iceni, served as a temporary administrative arrangement following earlier Roman military actions under Claudius. This relationship maintained a degree of independence for the Iceni until the king's death in 60 CE.123

The conflict arose because the Romans failed to honor the transition of power intended by Prasutagus. In his will, the king sought to secure protection for his family by leaving his private wealth to his two daughters and the Roman emperor Nero. Instead of respecting this arrangement, Roman authorities forcibly annexed the kingdom, plundered the assets of the nobility, humiliated the queen, Boudicca, and abused her daughters.453

These actions transformed a stable client relationship into a catalyst for a major insurrection. Driven by these grievances, Boudicca rallied the Iceni and the neighboring Trinovantes to revolt against Roman rule, leading to the widespread destruction of key Roman centers such as Camulodunum, Verulamium, and London.435