The geography of India is important for farming. There are two fertile valleys that they use for farming, these valleys are both fed by the Himalayan mountains. When the water comes down for the Himalayans they flow into two rivers. If the water is controlled then the two valleys near these rivers can be used for irrigation. Monsoons in the Summer also bring rain and some farmers would celebrate because the rain would provide fertile soil.
What is the CASTE SYSTEM and what role did the Aryans play in it?
The caste system is a way of categorizing people in india. It is an old Indian tradition that still goes on today illegally. The Aryans moved into India and before they came there the Caste System wasn't a thing. They wanted a way to control the Indians and the Caste System was made. This was a way to categorize people by using different social classes. At the top were priests and scholars, next were kings and rulers, next were land owners, next were farmers and merchants and that was the lowest class in the system.
What do Hindus believe?
Hindus believe in reincarnation. They believe that if you act good you will be reincarnated in a higher cast. They do this until they are joined with a universal spirit named Brahman. They also believe in karma, if you didn't act good in your past life you would be reincarnated into a lower cast. This mix of beliefs is called Hinduism.
What do Buddhist believe?
Buddhist believe in the 8 fold path and follow the 4 noble truths. They believe that unlike Hinduism, anyone can reach enlightenment, or nirvana. They don't believe in many gods, the believe in the enlightened one or the Buddha. The founder of Buddhism is Siddhartha Gautama.