The high points of this period are the great cultural developments which took place primarily during the reigns of Samudragupta, Chandragupta II and Kumaragupta I. Many of the literary sources, such as Mahabharata and Ramayana, were canonised during this period. The Gupta period produced scholars such as Kalidasa, Aryabhata, Varahamihira, and Vatsyayana who made great advancements in many academic fields. Science and political administration reached new heights during the Gupta era. The period gave rise to achievements in architecture, sculpture, and painting that "set standards of form and taste determined the whole subsequent course of art, not only in India but far beyond her borders". Strong trade ties also made the region an important cultural centre and established the region as a base that would influence nearby kingdoms and regions in South Asia and Southeast Asia. The Puranas, earlier long poems on a variety of subjects, are also thought to have been committed to written texts around this period. Hinduism was followed by the rulers and the Brahmins flourished in the Gupta empire but the Guptas tolerated people of other faiths as well. Vedic sacrifices were reduced in the Gupta period