The time between the Maurya Empire in the 3rd century BCE and the end of the Gupta Empire in the 6th century CE is referred to as the "Classical" period of India. It can be divided in various sub-periods, depending on the chosen periodisation. Classical period begins after the decline of the Maurya Empire, and the corresponding rise of the Shunga dynasty and Satavahana dynasty. The Gupta Empire (4th–6th century) is regarded as the "Golden Age" of Hinduism, although a host of kingdoms ruled over India in these centuries. Also, the Sangam literature flourished from the 3rd century BCE to the 3rd century CE in southern India. During this period, India's economy is estimated to have been the largest in the world, having between one-third and one-quarter of the world's wealth, from 1 CE to 1000 CE.