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•The zeppelin invented by Count Ferdinand von Zeppelin.
ferdinand mad the zeppelin for the war and thenafter to get to city to city mad travil easy -
•The lie detector or polygraph machine is invented by James Mackenzie
the lie detector was for hard cremanals to find the truth of what happend -
•The very first piloted helicopter was invented by Paul Cornu
it stade in the air for 2 minutes
people was inprest that someone made that -
•The pop-up toaster invented by Charles Strite.
the toaster changed wemons life for ever because they can put bread in and start geting every thing reday for sandwithes -
•Yo-Yo was invented by 1929 and was a fast seller at first but slowed down
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•The first handheld calculator invented was in 1967
it changed the would for ever by giving people a way to do math with out having to writhing it all down -
•The floppy disk invented by Alan Shugart.
the floppy disk mad it easy to save documents and photso
