The earliest literary writings in India, composed between 1400 BCE and 1200 CE, were in the Sanskrit language. Prominent works of this Sanskrit literature include epics such as the Mahabharata and the Ramayana, the dramas of Kalidasa such as the Abhijnanasakuntalam (The Recognition of Sakuntala), and poetry such as the Mahakavya. Kamasutra, the famous book about sexual intercourse also originated in India. Developed between 600 BCE and 300 CE in South India, the Sangam literature, consisting of 2,381 poems, is regarded as a predecessor of Tamil literature. From the 14th to the 18th centuries, India’s literary traditions went through a period of drastic change because of the emergence of devotional poets such as Kabir, Tulsidas, and Guru Nanak. This period was characterised by a varied and wide spectrum of thought and expression; as a consequence, medieval Indian literary works differed significantly from classical traditions. In the 19th century, Indian writers took a new interest in social questions and psychological descriptions. In the 20th century, Indian literature was influenced by the works of Bengali poet and novelist Rabindranath Tagore.