0
5
16 million
Of course people from the Civil War survived. But considering that it's now the 21st century, those people are most likely dead.
World War 1, the 1914-1918 war was fought in the 20th Century. The date today is the 7th September 2014 and today is in the 21st Century.
In the 21st Century, nearly every US state has one, or one in planning.