World War 1

Assassination of Archduke Ferdinand

Jun 28, 1914

https://www.history.com/news/the-assassination-of-archduke-franz-ferdinand-100-years-ago

Austria Hungary Serbia War

Jul 28, 1914

https://www.loc.gov/rr/news/topics/ww1declarations.html

Germany declares war on Russia

Aug 1, 1914

https://spartacus-educational.com/FWWtimetable.htm

Germany declares war on France,

Aug 3, 1914

http://www.historyplace.com/worldhistory/firstworldwar/index-1914.html

Battle of Mons

Aug 23, 1914

https://www.britannica.com/list/battles-of-world-war-i

Battle of Mons

Period: Aug 23, 1914 to Nov 11, 1918

https://www.britannica.com/list/battles-of-world-war-i

Battle of Tannenberg

Aug 26, 1914

https://www.historyonthenet.com/world-war-one-timeline

Battle of Tannenberg

Period: Aug 26, 1914 to Aug 30, 1914

https://www.historyonthenet.com/world-war-one-timeline

First Battle of Marne

Sep 6, 1914

https://www.worldatlas.com/articles/major-battles-of-world-war-i-ww1.html

First Battle of the Marne

Period: Sep 6, 1914 to Sep 10, 1914

https://www.worldatlas.com/articles/major-battles-of-world-war-i-ww1.html

Sinking of the RMS Lusitania

May 7, 1915

https://medium.com/america-and-the-great-war/the-sinking-of-the-lusitania-on-may-7-1915-f9c7eb9576a

The Battle of the Somme

Jul 1, 1916

https://www.iwm.org.uk/history/5-things-you-need-to-know-about-the-battle-of-the-somme

The Battle of the Somme

Period: Jul 1, 1916 to Jul 18, 1916

https://www.iwm.org.uk/history/5-things-you-need-to-know-about-the-battle-of-the-somme

First Tanks

Sep 15, 1916

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

Zimmerman Telegram

Jan 16, 1917

https://www.bbc.com/news/uk-38581861

Spring Offensive Battle(Kaiserschlacht)

Mar 21, 1918

https://www.historyhit.com/biggest-battles-world-war-one/

Kaiserschlacht Battle

Period: Mar 21, 1918 to Jul 18, 1918

https://www.historyhit.com/biggest-battles-world-war-one/

Armistice Day

Nov 11, 1918

https://study.com/academy/lesson/armistice-day-in-wwi-definition-facts.html

Treaty of Versailles was signed in Paris

Jun 28, 1919

https://www.khanacademy.org/humanities/us-history/rise-to-world-power/us-in-wwi/a/the-treaty-of-versailles