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as the evolution of the mankind took place over many millions years ago, humans have achieved great success and explored the land, oceans, sky and even space beyond planet earth. civilizations like old stone age, middle stone age, new stone age etc... have changed the face of earth and have left traces of development in terms of architecture, education, technology and management. but all civilizations took place at different geographical locations and at different time period. invention of "zero" is major milestone, which enabled humans to do the math and brought revolution to the mankind. intellectuals from all parts of the world have gone far beyond to explore the basic building blocks of the humans and their environment. in last 1000 years they changed the world by making discoveries in electronics, transport, infrastructures and also in other fields. discovery reached to extent of sending a human to moon. even robot was sent to the planet mars to explore the possibility of establis