What influence did the appearance of ironware bring to Aryans?

In the Ganges valley, Aryans have made new progress in productivity, and it is very representative to start using iron. After the appearance of ironware, it was widely used to produce labor and combat tools such as axes, plows, arrows, spears and swords, and played an important role in the development of the Ganges River basin.

After the appearance of iron plough, the land can be deeply cultivated, which greatly improves the quality of agricultural production. When it comes to rituals related to plowing, Hundred Kinds of Burning Calligraphy mentions plowing with six cows, eight cows, 12 cows or even 24 cows. Therefore, cows become particularly precious, and cows are gradually deified. Also in the Ganges valley, because of abundant rainfall, rice has become the main crop. The planting of cotton and sugarcane has increased, and the requirements of rice and these crops for irrigation have become higher, which naturally promotes the construction and use of water conservancy facilities. In the Avena Veda, some rituals of introducing river water into new channels are described.