Final answer:
The correct word to fill in the blank is accretion. Accretion means the gradual increase or growth of something, which is suitable in the given context of 'growing power and influence'
Step-by-step explanation:
The correct word to fill in the blank is accretion. Accretion means the gradual increase or growth of something, which is suitable in the given context of 'growing power and influence'. For example, one could say 'The growing accretion of his power and influence'.
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