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The value of 'PI" was first calculated by the indian mathmatician Budhayana. and he explained the concept of what is know as the Pythagorean theorem. He discovered this in the 6th centuary, which was long before the European mathmaticians. Although modern images & description of india often show poverty, india was one of the richest countries till thw time of british in the early 17th centuary. christopher coulumbus was attracted by india's wealth and was looking for route to india when he discovered america by mistake. The world's first university was established in Takshila in 700bc. More than 10,500 students from all over the world studied more than 60 subjects. The university of Nagaland built in the 4th centuary was one of the greatest achievements of the ancient india in the field of education. Ayurveda is the earliest school of medicine know to mankind. the father of medicine, charaka, consolidated ayurveda 2500 year ago.Home From Many Lands:- The kind of home we live in depends on the kind of climate we have and the building materials we can use. The Bedouin tent is easy to carry about and good at keeping out the sun in the desert. The Swiss chalet has a sloping roof so that snow slides oft it. Ahouse on stilts is useful in a land where there are many floods. In cities there is very little land for building. Large numbers of people often live crowded together. Some people live on top of one another in tall apartment blocks. Example. Eskimose once used to build homes called igloos from blocks of ice, In the Middle East the wandering Bedouin tribes live in tents, A suit in the in the Philipines, Swiss chalet, Woven grass and branches make cool, movable homes in partys of Africa, All over the world people live in boats. This one is in India.An adult giraffe's kick is so powerful that it can kill a lion. When angered, the tasmania devil, a mansupial with mainly black fur, tums pinkish red. squirrels can climb tress faster than they can run on the ground. the hipoptamus has a 4cm thick skin so solid that most bullet can't penetrate it. A grasshopper's blood is green in colour.