Final answer:
The control of fleets in the novel Red Rising by Cassius's father and the Archgovernor cannot be accurately determined based on the provided information.
Step-by-step explanation:
The information provided does not specify the fleets under the control of Cassius's father and the Archgovernor in the novel Red Rising. Therefore, it is not possible to provide a factually accurate answer for this question. Additional context or book references might help in giving a proper response.
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