Question

how did the use of iron help agriculture in the ganga plains ​

Answer 1

Answer:

In the prehistory of the Indian subcontinent, an "Iron Age" is recognized as succeeding the Late Harappan (Cemetery H) culture.[1] The main Iron Age archaeological cultures of present-day northern India are the Painted Grey Ware culture (1200 to 600 BC) and the Northern Black Polished Ware (700 to 200 BC). This corresponds to the transition of the Janapadas or principalities of the Vedic period to the sixteen Mahajanapadas or region-states of the early historic period, culminating in the emergence of the Maurya Empire towards the end of the period.