Why did India`s first civilization develop in the Indus Valley? India`s

Why did India's first civilization develop in the Indus Valley?
India's first civilization developed in the Indus Valley because the Indus
river system brings a steady source of irrigation water to the Indus
Valley that made farming in this otherwise dry region possible. Regular
river flooding also deposited fertile soil that was good for crops. The
food surpluses from farming were key to the development of the
advanced Indus civilization.
Explain how Hindus may worship many different gods while believing
that there is one supreme being.
Hindus believe that the one supreme God Brahman is the source of all
things, and that all other gods are actually different forms of Brahman.
So Hindus may worship different individual gods and goddesses, such as
Vishnu, Shiva, or Shakti, because that particular form of Brahman may
appeal to them.
Where and how has Hinduism had its greatest cultural impact?
Hinduism had its greatest cultural impact on India. Hinduism has the
greatest number of followers and the greatest cultural impact on India,
but it has also had an impact on Southeast Asia. The epics of Hindu
literature, the Mahabharata and the Ramayana, have influenced other
art forms for many years. Hindu temples in India are centers of art,
music, and dance. Hindu festivals and traditions form a large part of
daily life in India