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Social Science -History ILM, . The Pre - Historic Society, , 1., A:, , >’ dn, , PA DM da, , Amrutha Varshini Vidyalaya, Kumarapatnam, 6th Std, , Whcih are the three main stages of history 7, , 1. Pre - historic period, , 2. Protohistoric period, , 3. Historic period, , When was the Earth born ?, , About 4600 Million years ago., , Why the Mesolithic age is also called as Microlithic age ?, Because humans started using small and more efficient tools, with wooden handles as spears while hunting., , In which age, did people start agriculture ?, , Neolithic age., , Which was the first metal used by human beings ?, Copper., , What is proto-historic period ?, The period that has a record of writing but it is not understood by, , the succeeding ages is known as protohistoric period., What do common people call the tombs of Grand Stone Age, , as ?, Hut/ House of Pandavas or stone of Mauryas., , What were the stone tools used for ?, The stone tools were used to dig the ground, hunt animals and, skin them, cut trees, scrape the barks of trees, chop meat, fruits, , and wood and also to stitch animal skins into clothes., , G