a shaped the world. Science, math, astronomy, materials, medicine, THE MOVEMENT OF THE SUN, PLANET, AND STARS.
The first planned cities too
Indian food, Indian music, Bollywood and yoga...
That probably the sum total of knowledge most people have amount India.
The fact is our numbers and many of the words we use every day come from India . ("Arabic" numerals really came from India.)
We know China has a big population, but in fact India is not far off and is catching up every year.
Between China and India, we're talking 40% of every person walking around on earth today. If you're going to understand Planet Earth, this is a culture and history you need to know a little about it.