Final answer:
Roger Mortimer's claim to power was weakened by the lack of traditional or legal legitimacy and the presence of hostile forces, both of which are crucial for sustaining authority and contributed to his eventual downfall.
Step-by-step explanation:
The question seems to pertain to the historical figure of Roger Mortimer, a 14th-century English nobleman who, for a period, was de facto ruler of England after he led a successful rebellion against King Edward II.
In historical context, Mortimer's claim to power was weakened by two key factors: the lack of traditional or legal legitimacy for his governance and the presence of hostile forces against his regime. These weaknesses eventually contributed to Mortimer's downfall, as legitimacy and support are crucial for sustaining authority in any political system.
Regarding the context of these factors:
- Lack of traditional or legal legitimacy - Mortimer's rule was not based on lawful succession, but on the forceful deposition of the reigning monarch, which undermined his credibility.
- Presence of hostile forces - Mortimer faced considerable opposition, including from other nobles and eventually from Edward III, which challenged his authority and stability.