Correct Option
The correct option is (a).
Explanation
Magadha emerged as the most powerful Mahajanapada between the 6th and 4th centuries BCE. Its rise was facilitated by a combination of strategic geographical location, abundant natural resources, and the aggressive policies of its rulers.
Statement-wise Analysis
- Statement 1 is Correct: Magadha was situated in the middle Gangetic plain. The rivers Ganga and Son flowed through the region, ensuring perennial water supplies for agriculture and serving as cheap, efficient means of transport and trade. The capital, Pataliputra, was strategically located at the confluence of these rivers, functioning as a "water fort" (Jaladurga).
- Statement 2 is Correct: The region possessed rich deposits of iron ore (near modern-day Rajgir and parts of Jharkhand). This accessibility allowed for the manufacturing of strong agricultural tools (for clearing forests and deep ploughing) and superior iron weapons, providing Magadha with a distinct military and economic advantage over rival states.
- Statement 3 is Incorrect: The forests in the Magadha region were indeed significant, but they were primarily a source of elephants, not horses. Elephants were a crucial component of the Magadhan military strategy, used for storming fortresses and traversing difficult terrain. High-quality horses were generally imported from the north-western regions (such as Kamboja) rather than being sourced from local forests.
Key Takeaway: The primary material factors behind Magadha's dominance were the proximity to iron mines for weaponry, the availability of elephants from local forests for the army, and the strategic riverine transport system.