The ancient history of India revolves around the time roughly before the Mughal invasion of India. So it roughly starts with human civilization on the Indian- subcontinent who lived in tribes like bhil, Santhals, nagas, etc.
These tribes were known to inhabit India before the Dravidian ascent.
This ancient history of India is further classified into paleolithic, mesolithic, neolithic and chalcolithic stages based on tools and evolution of the then existing human race in India.
The Chalcolithic stage in India marks the onset of larger human civilisation, inculcating the great Indus valley civilisation in it. The phase preceding the Chalcolithic age is the Iron Age, which turned the path of India. Evolution of great kings like Purushottam (porus), king Mahapadma- Nanda, and king Bimbisara of Magadha. This period also marked the invasion of Alexander.
The Iron Age then further evolved into the great golden time of the Mauryan Empire and Gupta dynasty, which had great visionary kings. This period had other remarkable kings, which made India a great nation.
The medieval history marks the onset and invasion of Muhammad bin Kasim, which led to the period of Mughals into India gradually; this period saw the rise and massive downfalls of Mughal kings, and other Delhi sultans. This period has it all, whether Mughals’ golden rise and loot, to the highly sorrowful end of later Mughals. During the Mughal periods, Britishers entered India as traders, but turned Indian politics into a new face which led to the onset of modern history.
Modern history inculcates ironical events like the British taking complete political control of India, exploitation of Indian workers in mills, farmers in plantations, etc, to great wars like the 1857 independence war, creating a large impact and shaping what India is today.
Roughly these were the important characteristics of these three phases of Indian history.
The historical timeline of India is divided into 3 phases- modern, medieval and ancient for a better understanding. It is divided based on the time period and evolutionary phases of political power in India, starting from prehistoric times to ancient Indian kingdoms like Magadha and Mauryan to the Mughal era and Delhi sultanate led to the advent of British rule in India.