Clocks made before 1660 had only one hand - an hour hand.
41
The U.S. motto, 'In God We Trust', was not adopted as the national slogan until 1956.
72
Queen Elizabeth II served as a mechanic and driver in World War 2.
36
Grenades were invented in China over 1,000 years ago.
50
A monk had once written over a book that contained information about calculus that was written by Archimedes in ancient Greece that could have made us 100 or even 1000 years more mathematically and technologically advanced.
13
The flushing toilet was invented in 1596, not by Thomas Crapper as most people think, but by Sir John Harington.
98
Kung Fu actually originated in India, but was developed further in China.
90