The U.S. entered the war to end all wars in 1917 (apr 12, 1917 – 1h 13min, dec 15, 2017 y)
Description:
The U.S did not like that millions of dead's was happening so they came into stop an help fight.Added to timeline:
Date:
apr 12, 1917
1h 13min, dec 15, 2017 y
~ 100 years