World's Greatest Inventions
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These tests consist of the 30 greatest inventions that changed the world.
Description
Inventions, World inventors, Discoveries of centuries, Discoveries that changed the world, Inventions in history, World greatest discoveries, Inventions during industrial revolution, Famous scientists, Inventions that changed the world, Amazing inventions, Historical inventions, The smartest scientists in history, Smart people
Tags
30
Questions
30 sec
Per question
3:43
Average time
3.0
Contest Score
87
Participants
2 comments
A good quiz
Thanks :)
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