INTRODUCTION TO ANCIENT HISTORY AND CULTURE , A BRIEF HISTORY OF PRE-HISTORIC AGE, INDUS VALLEY CIVILIZATION , VEDIC PERIOD , RISE OF MAGADH EMPIRE AND THE MAURYAN DYNASTY, GUPTA DYNASTY : GOLDEN ERA OF ANCIENT INDIA , AGE OF HARSHVARDHAN AND RISE OF RAJPUR STATES , RISE OF FEUDALISM IN INDIA , SOCIAL SYSTEM OF HINDUS : CUSTOMS,RITUALS AND BELIEFS , ADVENT OF ISLAM AND MUSLIM INVASIONS