Madhava of Sangamagrama was a 14th-century Indian mathematician and astronomer, known for his foundational contributions to the field of calculus. He was a key figure in the Kerala School of Astronomy and Mathematics, which developed advanced mathematical concepts long before they were recognized in Europe. His work included infinite series, trigonometric functions, and approximations for π. Madhava's most notable achievement was the development of the Madhava-Leibniz series, which provided a way to calculate π using an infinite series. His ideas laid the groundwork for later mathematicians, influencing both Indian and global mathematics. His legacy continues to be celebrated for its innovative approach to mathematical problems.