Answer:
Because of India's fertile land, they were able to provide for their own people and trade with other civilizations, since they had a lot of food.
Step-by-step explanation:
•"Because of this fertile environment, they began to grow crops and raise animals as farmers instead of roaming as nomads."
•"In northern India, the Brahmaputra, the Ganges, and the Indus rivers carry rich silt from the mountains to the plains. India's early settlers farmed and later built walled settlements in the river valleys. This was the start of civilization in India."