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Our country's name 'India' was taken up from River Indus where the first settlers established their home. The river was worshipped by Aryans as Sindhu.
The number system was first invented in ancient India. Zero was first used by Aryabhatta.
The Decimal system and Place value system were developed in India in 100 B.C.
Takshila holds distinction of being world's first university. It was established in 700 BC. More than 10,000 students some of them from far-off countries like China and Japan enrolled in about 60 subjects. It was one of the greatest achievements of Ancient India.
The earliest school of medicine Ayurveda was known to mankind. It was consolidated by Charaka some 2500 years ago. Over 2600 years ago Sushruta the father of surgery conducted surgeries like cataract, fratures, and rhinoplasty and brain surgeries without the use of anesthesia.
Navigation started in the river Sindu 6000 years ago. Derived from the Sanskrit word Navgatih ancient Indians excelled in this art. 'Navy' word is also derived from Sanskrit word 'nou'.
Bhaskaracharya calculated the time taken by the earth to orbit the sun hundreds of years ago. Guess his calculation done in 5th century- 365.258756484 days.
Budhayana was the first Indian mathematician (6th century) to calculate the value of 'pi' and explained the concept of Pythagorean Theorem. Ancient India is the home of algebra, trigonometry and calculus. Greeks and Romans used the numbers as big as 106 whereas ancient Indians used numbers as big as 10*53 (10 to the power of 53).
Saurashtra is the home of earliest reservoir and dam built for irrigation. The records of King Rudradaman I of 150 BC show that a beautiful lake called Sudarshana was constructed on the hills of Raivataka during Chandragupta Maurya's time.
Shataranja or Ashtapada or common chess was invented in India.
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