Answer:
Option: 1.More land could be cleared.
3. More diverse crops could be grown.
Explanation:
Iron technology helped the early farmers to cultivate by shifting from bronze ploughs to Iron. Iron tools helped people in clearing forests to make use of more land for farming. Iron tools were much stronger than the bronze, which helped in growing different crops like barley, corn, and millet, but the wheat crop was most prevalent among the farmers.