Official Answer Key & Detailed Solution
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Correct Answer: Option (D) — Magadha
Concept & Option Breakdown
Standard Reference VerifiedAmong the sixteen Mahajanapadas of the 6th century BCE, Magadha emerged as the most powerful state due to its strategic location, rich iron deposits (at Rajgir), fertile Gangetic alluvium, forest resources for war elephants, and capable rulers like Bimbisara and Ajatashatru.
Magadha's natural resources and strategic geographical advantages allowed it to conquer neighbouring Mahajanapadas and build the first imperial power.
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