The annexation of the Anga Mahajanapadas by Bimbisara was a strategic masterstroke for Magadha primarily because:

Options:

• A: It gave Magadha direct access to the gold mines of the Deccan plateau.
• B: It eliminated the threat of the powerful Avanti kingdom from the western frontier.
• C: It provided Magadha with a buffer state against the aggressive expansion of the Vajjian confederacy.
• D: It secured control over the river port of Champa, opening up maritime trade routes down the Ganges to the Bay of Bengal.

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