It happened in the 20th century since it happened in 1917.
9/11, Hurricane Katrina, Colorado shooting at the batman premiere, and more Im missing
As far as I know, 1906 is not a century.
the twentieth
bible
NOTHING
It is in the 1st century BC
The 17th Century AD - it happened in 1666.
A century ago people knew how to spell "happened".
Voyage Century Online happened in 2006.
Another Century's Episode happened in 2005.
a earthquake happened