Stone Age21Indus Valley Civilization44Vedic Age45Buddhism45Jain Religion20Shaiva & Bhagavata Religion156th Century BCE Political Condition20Greek Invasion5Maurya Empire47Post-Mauryan Period39Gupta and Post-Gupta Period56Architecture in Ancient India36South India (Chola, Chalukya, Pallava, Sangam)37Ancient Literature29Pre-Medieval Period28