What do you all thin the greatest invention of the 20th century was. (from 1900 to 1999 )
my top three choices would be
1.) the internet ( it is important)
2.) the assembly line (it made manufactioring less expensive)
3.) the Microwave (without it i would starve!!!!!)
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the space shuttle. no! the dodge charger. NO!!!...papa johns......yeah, papa johns pizza : )