Answer: Gupta
Explanation: The ancient Indian Gupta Empire has contributed to the development of science in general, not only in the field of mathematics, but also in medicine, astronomy and art. The very important achievement of that time, which has a great contribution, is for today's use of the decimal system of numbers, and the so-called place-value system. This system was discovered by mathematician Aryabhatta who used zero as a numerical symbol for a placeholder, based on ten. Such a system has made it easier to count, calculate, set the equation, theorem, etc.