The Gupta age actually is the age of revival of Hinduism. Hinduism reached its peak. Many temples were constructed. Sinsikrat was promoted. Math and music got a fame. Hindus' religious leaders started their efforts to make their religion attractive.
The Gupta Empire (A.D. 320 to 647) was marked by the return of Brahmanism (Hinduism) as the state religion. It also regarded as the classical period or golden age of Hindu art, literature and science. The Gupta established a strong central government which also allowed a degree of local control. Gupta society was ordered in accordance with Hindu beliefs. This included a strict caste system. Peace and prosperity created under Gupta leadership enabled the pursuit of scientific and artistic endeavors. [Source: Regents Prep]
Steven M. Kossak and Edith W. Watts from The Metropolitan Museum of Art wrote: “The Gupta emperors (4th–6th century) conquered and unified a large portion of northern India and, like the Mughals, created a powerful central state surrounded by kingdoms loyal to it. Under royal patronage, this period became India’s classical age of literature, theater, and visual art. The aesthetic canons that came to dominate all the arts of later India were codified during this time. Sanskrit poetry and prose, including the work of the great dramatist Kalidasa, flourished, and the concept of zero was conceived which led to a more practical system of numbering. Arab traders adapted and further developed the concept, and from western Asia the system of “Arabic numerals” traveled to Europe. [Source: Steven M. Kossak and Edith W. Watts, The Art of South, and Southeast Asia, The Metropolitan Museum of Art, New York]
Akhilesh Pillalamarri wrote in The National Interest: “The Gupta Empire (320-550 C.E.) was a great empire but also had a mixed record. Like the previous Maurya Empire, it was based in the Magadha region and conquered much of South Asia, though unlike that empire, its territory was limited only to what is today North India. It was under Gupta rule that India enjoyed the height of its classical civilization, its golden age, when much of its famous literature and science was produced. Yet, it was also under the Guptas that caste became rigid while the decentralization of power to local rulers continued. After a period of initial expansion, the empire stabilized and did a good job of keeping out invaders (like the Huns) for two centuries. Indian civilization expanded into much of Bengal during this time, which was previously a lightly inhabited swampy area. The main achievements of the Guptas during this era of peace were artistic and intellectual. During this period, zero was first used and chess invented, and many other astronomical and mathematical theories were first elucidated. The Gupta Empire collapsed due to continuous invasion and fragmentation from local rulers. Power at this point increasingly shifted to regional rulers outside of the Ganges valley. [Source: Akhilesh Pillalamarri, The National Interest, May 8, 2015 <|>]
The origins of Gupta is not clearly known, It emergence as a major empire occurred when Chandragupta I (Chandra Gupta I) married into royalty in the A.D. 4th century. Based in the Ganges Valley, he established a capital at Pataliputra and united north India in A.D. 320. His son Samaudrahupta extended the influence of the empire southward. Hindu religion and Brahmin power revived under peaceful and prosperous reign.
The Gupta dynasty reached its peak during the reign of Chandragupta II (A.D. 375 to 415). His empire occupied much of what is now northern India. Following a series of victories against the Scythians (A.D. 388-409) he expanded the Gupta empire into western India and what is now the Sind area of Pakistan.Though the last strong Gupta king, Skanadagupta, held off invasions by the Huns in the 5th century, subsequent invasion weakened the dynasty. An invasion by the White Huns destroyed the much civilization around 550 and the empire finally collapsed completely in 647. Inability to exert control over a large area had as much to do with the collapse as the invasions.
The world population was around 170 million at the of the birth of Jesus. In A.D. 100 it had risen to around 180 million. In 190 it rose to 190 million. At the beginning of the 4th century the world population was around 375 million with four fifths of the world's population living under the Roman, Chinese Han and Indian Gupta empires.
Book: Hinds, Kathryn, India’s Gupta Dynasty. New York: Benchmark Books, 1996.