"Necessity is the mother of invention." See more in this countdown for the top 3 inventions of all time, in Season 1, Episode 4, "Invention Showdown."

#HistorysGreatestofAllTime

Subscribe for more HISTORY:
http://histv.co/SubscribeHistoryYT

Check out exclusive HISTORY content:
History Newsletter - https://histv.co/newsletter
Website - https://histv.co/History
Facebook - https://histv.co/Facebook
Twitter - https://histv.co/Twitter

What does it mean to be the greatest of all-time and how is that honor decided? In this series, Peyton Manning asks 100 experts in various categories to rank each contender using statistics, innovation and legacy as criteria.

HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.