Which Leonardo da Vinci machine is a famous early concept for a tank?
Answer
Armored vehicle
The well runs deep
239,331 public questions across 1,818 topics. Challenge yourself, or build the perfect quiz for game night.
Answer
Armored vehicle
Answer
Aerial screw
Answer
August 26, 2015
Answer
1973–1974 stock market crash
Answer
October 29, 1929
Every question has an answer
Something for every quiz
Reveal answers at your own pace
Fresh from the well
Answer
Armored vehicle
Answer
Aerial screw
Answer
1973–1974 stock market crash
Answer
October 29, 1929
Answer
S&P 500
Answer
Lehman Brothers
Answer
Hong Kong Hang Seng Index
Answer
Friday the 13th mini-crash