Which metal revolutionized agriculture?

• A. Iron
• B. Bronze
• C. Copper
• D. Tin

Answer: (A)

The key idea is how material technology boosts farming power. Iron tools transformed agriculture because iron is strong, durable, and can be sharpened to a long-lasting edge. Plows, hoes, and sickles made from iron could cut through tougher soil, turn earth more deeply, and stay effective for longer, so fields could be prepared more efficiently and yields increased. Iron also became more widely available and affordable as ore was more abundant and easier to work than bronze alloys. Bronze, copper, and tin tools were useful in earlier times but didn’t offer the same combination of durability, availability, and economic practicality for mass farming. This shift to iron tools helped support larger agricultural output and larger populations.