Which scientific or technological advance did not take place in the first fifteen years of the twentieth century ?

A. Albert Einsteins theory of relativity

B. the creation of the internet

C. the invention of the airplane

D. wireless communication across the Atlantic

Found an error? Read our corrections policy and report it in the comments below.

Be the first to comment if anything wrong with this mcq
Your comment successfully submitted!
It will automatically posted after review and approval by our staff member.