How did heavy iron plows help improve food production?

Heavy iron plows significantly improved food production by enabling farmers to cultivate tougher soils that were previously difficult to till. Their durability and efficiency allowed for deeper plowing, which improved soil aeration and nutrient mixing, leading to better crop yields. Additionally, these plows could be pulled by teams of horses or oxen, increasing the speed and efficiency of farming operations. Overall, the use of heavy iron plows contributed to increased agricultural productivity and supported population growth.