Sources

https://www.thoughtco.com/world-war-i-timeline-from-1914-to-1918-4148287

https://www.enotes.com/homework-help/why-did-united-states-enter-world-war-400883

https://kidskonnect.com/history/ww1-start/

https://www.historyonthenet.com/effects-of-world-war-1/

https://www.theguardian.com/world/gallery/2008/nov/08/first-world-war-key-figures-gallery

https://www.shmoop.com/wwi/timeline.html

http://www.americaslibrary.gov/jb/jazz/jb_jazz_wwi_1.html