The period from 600 BCE -300 BCE witnessed the rise of maha Jana Padas. The sixteen powerful kingdoms, the maha Jana Padas evolved and flourished belt stretching from Gandhara in the North West to Bengal in the eastern parts of India’s subcontinent. This period saw major urbanization in India. As the Maha Jana Padas started to grow larger day by day, Magadha formed one of the major kingdoms. The Magadha kingdom is heavily mentioned in the Buddhist and Jain tex t and also in the Puranas, Ramayana, and Mahabharata The kingdom Magadha was ruled by the Harayanka Dynasty during 600 – 413 BCE, the king Bimbisara led active and expansion policy, conquering Anga. The king Bimbisara was overthrown by his son Ajathashatru, who continued the expansion the policy of Magadha. During this period Gotham Buddha lived much of his life in Magadha. The attained enlightenment in Bodh Gaya, Buddha spent most of his life teaching his doctrine to people from various castes, he urged his disciples to teach in local languages. During the 345 BCE the Nanda dynasty expanded rapidly. The dynasty was famed with great wealth. To achieve the objective of building a large empire they built a vast army. According to Greek historians the size of the Nanda army. having 200,000 infantry, 80,000 cavalries, 8,000 war chariots, and over 6,000 war elephants. However, the Nanda Empire did not have the opportunity to see their army face alexander, who invaded northwestern India at the time of the Nanda Dynasty Chandragupta Maurya the founder of Mauryan Empire, comes to power unified most of the Indian Subcontinents into one state with the help of Chanakya to build Akhand Bharath The grandson of Chandra Gupta Maurya, Ashoka the great embraced Buddhism and has said to have been the foundation of social and political peace and non-violence Meanwhile, in the Southern Part of India, Tamil literature flourished during the 3rd century BCE. During this period three Tamil dynasty was Chola dynasty, Chera dynasty, and the Pandya dynasty.