What were Edison's inventions that made the world happy?
when did he succeed in inventing electric bulb?
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4
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electric bulb was invented by Edison
in 1879,he succeeded in inventing electric bulb.
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Agriculture can be called the backbone of India's economic system because two-thirds of the Indian population is engaged in the cultivation of land. Agriculture not only helps to feed the large population, but it also supports the principal manufacturing industries with raw materials.
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