The Great King of Gupta Empire, Sandra Gupta, participated most in building the “The Golden Age of India.” In the field of war, territory extensively expanded, and Samudragupta has been regarded as a great historical alongside Napoleon and Alexander the Great. Furthermore, the Gupta Empire was called the golden age due to the advancement of mathematics and astronomy, art and literature, and medicine. During this time, creations of sculptures, paintings, books were made. In the field of science and mathematics, Aryabhatta—an Indian mathematician— theorized that the earth rotates on its axis. In addition, he calculated that a solar year was 365.358 days, which is very close to the actual number.