What do you called the first Indian civilization?

The first Indian civilization is known as the Indus Valley Civilization, which flourished around 2500 BCE in what is now Pakistan and northwest India. It is characterized by advanced urban planning, architecture, and social organization, with major cities like Harappa and Mohenjo-Daro. The civilization is notable for its sophisticated drainage systems, standardized weights and measures, and a script that remains undeciphered.