Credit is to be given to India for the existence of modern civilization, as much of our knowledge and technology has been made possible by modifications to our (Western) knowledge base via knowledge from ancient times in India.
The numerical system of India – This numerical system superceded the Roman numeral system and made many things possible in mathematics, including making it easier to do math operations more elegantly and quickly, not to mention higher levels of mathematics. Zero is one of the important concepts in mathematics, and it is connected to the philosophical concept of “nothingness.”
Textile manufacturing – Cotton textile was pioneered by Indians, whose skills in developing, producing, and using such fabrics was without peer in the ancient world for centuries. Europeans were used to wearing animals skins, and it wasn’t until the time of Alexander the Great that Europe became exposed to wearing textile fabrics. Let it be known further that Britain’s textile industry actually came directly from India, with factories and machinery moved from India to Britain, leaving India destitute without means of income it had before (and leaving India to do the growing and processing of raw materials into suitable input materials for factories in Britain).
Indian steel – This metal has been made by India since even before a millennium BCE. It is known as Wootz steel or Damascene steel. During that time, this steel was in great demand by the Persian courts because it is a high-grade steel, known for its high level of hardness and the difficulty in forging this metal properly. It wasn’t until the 19th century that Europe could reverse-engineer the process for making this high-grade steel.