Ancient History ■ Main features of Indian prehistoric cultures. ■ Main features of Indus Valley Civilization.. ■ City planning-Harappa and Mohenjodaro. ■ Stone statues, clay statues and seals (c) Religion ■ Religion and economy. ■ Pre-Vedic period political condition, society, economy and religion changes in post Vedic period. ■ Jainism, Buddhism, Vaishnavism, Shaivism and Mahajanapadas. ■ Mauryan period and post-Mauryan period.. Origin of Mauryas, achievements of Chandragupta Maurya, a