<P> The Gupta Empire was an ancient Indian empire founded by Chandra Gupta 1 . The empire existed at its zenith from approximately 319 to 485 CE and covered much of the Indian subcontinent . This period is called the Golden Age of India, an idea contested by some scholars . Chandragupta I, Samudragupta, and Chandragupta II were the most notable rulers of the Gupta dynasty . The 5th - century CE Sanskrit poet Kalidasa credits the Guptas with having conquered about twenty - one kingdoms, both in and outside India, including the kingdoms of Parasikas, the Hunas, the Kambojas, tribes located in the west and east Oxus valleys, the Kinnaras, Kiratas, and others . </P> <P> The high points of this period are the great cultural developments which took place during the reign of Chandragupta II . All literary sources, such as Mahabharata and Ramayana, were canonised during this period . The Gupta period produced scholars such as Kalidasa, Aryabhata, Varahamihira, Vishnu Sharma 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 (that) 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 center and established the region as a base that would influence nearby kingdoms and regions in Burma, Sri Lanka, 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 . </P> <P> The empire gradually declined because of many factors such as substantial loss of territory and imperial authority caused by their own erstwhile feudatories, as well as the invasion by the Huna peoples (Kidarites and Alchon Huns) from Central Asia . After the collapse of the Gupta Empire in the 6th century, India was again ruled by numerous regional kingdoms . A minor line of the Gupta clan continued to rule Magadha after the disintegration of the empire . These Guptas were ultimately ousted by the Vardhana ruler Harsha, who established his empire in the first half of the 7th century . </P> <Table> <Tr> <Th> Gupta Empire 320 CE--550 CE </Th> </Tr> <Tr> <Td> <Table> <Tr> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Sri Gupta </Td> <Td> (240--280) </Td> </Tr> <Tr> <Td> Ghatotkacha </Td> <Td> (280--319) </Td> </Tr> <Tr> <Td> Chandragupta I </Td> <Td> (320--335) </Td> </Tr> <Tr> <Td> Kachagupta </Td> <Td> (335) </Td> </Tr> <Tr> <Td> Samudragupta </Td> <Td> (335--380) </Td> </Tr> <Tr> <Td> Ramagupta </Td> <Td> </Td> </Tr> <Tr> <Td> Chandragupta II </Td> <Td> (380--413 / 415) </Td> </Tr> <Tr> <Td> Kumaragupta I </Td> <Td> (415--455) </Td> </Tr> <Tr> <Td> Skandagupta </Td> <Td> (455 - 467) </Td> </Tr> <Tr> <Td> Purugupta </Td> <Td> (467--473) </Td> </Tr> <Tr> <Td> Kumaragupta II </Td> <Td> (473 - 476) </Td> </Tr> <Tr> <Td> Budhagupta </Td> <Td> (476--495) </Td> </Tr> <Tr> <Td> Narasimhagupta </Td> <Td> (495--?) </Td> </Tr> <Tr> <Td> (Bhanugupta) </Td> <Td> (circa 510) </Td> </Tr> <Tr> <Td> Vainyagupta </Td> <Td> (circa 507) </Td> </Tr> <Tr> <Td> Kumaragupta III </Td> <Td> (circa 530) </Td> </Tr> <Tr> <Td> Vishnugupta </Td> <Td> (540--550) </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> </Table>

Which invading tribe brought about the collapse of the gupta rule