Inventions that changed the World

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http://www.topyaps.com/top-10-inventions-that-changed-our-life/

http://10awesome.com/10-awesome-inventions-that-changed-our-lives/

http://www.elistmania.com/juice/10_modern_inventions_which_revolutionized_the_way_we_live/

http://www.cracked.com/article_17134_5-accidental-inventions-that-changed-world.html