Karez, Anicut, and Stepwell are all ancient Indian technologies used for water management.

The Arthashastra covers a wide range of topics, including economics, politics, military strategy, and more.

Aryabhata made significant contributions to mathematics, including the development of the concept of zero, the decimal system, and trigonometric functions.

Mohenjo-Daro is renowned for its advanced drainage system, multi-storied buildings, and the Great Bath, which is a large public bath.

Brahmagupta is known for developing the Brahmagupta formula, which is used to find the area of a cyclic quadrilateral.

The Susruta Samhita covers a wide range of medical topics, including medicine, surgery, and anatomy.

Madhava of Sangamagrama made significant contributions to mathematics, including the development of the Taylor series, the power series, and the calculus.

Taxila was a renowned center of learning, trade, and Buddhism in ancient India.

Bhaskara II is known for developing the Fibonacci sequence, which is a series of numbers where each number is the sum of the two preceding ones.

The Charaka Samhita covers a wide range of medical topics, including medicine, surgery, and anatomy.

Srinivasa Ramanujan made significant contributions to mathematics, including the development of the Ramanujan prime, the Ramanujan theta function, and the Hardy-Ramanujan conjecture.

Ujjain was a renowned center of astronomy, mathematics, and medicine in ancient India.

Varahamihira made significant contributions to astronomy, astrology, and mathematics, including the development of the Pancasiddhantika, the Brihat Samhita, and the Laghu Jataka.

The Brihat Samhita covers a wide range of topics, including astronomy, astrology, and architecture.

Pingala made significant contributions to prosody, mathematics, and astronomy, including the development of the Pingala's sutra, the Pingala's meter, and the Pingala's algorithm.