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Assassination of Archduke
His death sparked WW1
It is an important event in WW1 because it is literally one of the main reasons it started.
[https://www.history.com/news/did-franz-ferdinands-assassination-cause-world-war-i](http://.timetoast.com) -
WW1 begins
War on Serbia was declared by Austria-Hungary.
It is an important event in WW1 because it is when it begins. -
Germany declares war
They declared war in Russia.
It is an important event in WW1 because Germany and Russia fight. -
Canada joins war
Canada joins the war.
It is an important event in WW1 because another place joining adds to the "World" part in the World War. -
Battle of Tannenburg
Fought between Germany and Russia.
It is an important event in WW1 because it was a German victory. -
Trench Warfare begins
Germans dig in north of the Aisne River and trench warfare goes on for the next four years.
It is an important event of WW1 because it is how the rest of WW1 went on. -
Chemical Warfare
German army initiated the use of chemical warfare causing a large amount of deaths on all sides.
It is an important event to WW1 because it is the start of using chemicals in war. -
Lusitania Sinks
German submarine sinks the ship with almost 2,000 people.
It is an important event in WW1 because it is the reason Germany stopped the use of their submarines and stalled the United States from entering the war. -
Germany limits Subamarines
After the Lusitania, they limit unrestricted subs in an attempt to keep the US out of the war.
It is an important event in WW1 because it stalls the United States from entering the war. -
Battle of Verdun
Several French villages were wiped off the map completely and are now memorialized.
It is an important event in WW1 because places were literally wiped off the map. -
Battle of Jutland
This is one of the war's only major encounters between the two largest sea powers.
It is an important event in WW1 because the two largest sea powers fought. -
Battle of Somme
Nearly 20,000 people were killed in action and that is the bloodiest day in the British army's history.
It is an important event in WW1 because it is the bloodiest day in the British army's history. -
Tanks
The British used the first tanks ever used in battle.
It is an important event in WW1 because it was the start of the use of tanks. -
German Submarines Back
This causes the US to come into the war and lead to Germany's defeat.
It is an important event in WW1 because it lead to Germany's defeat. -
Zimmerman Telegram
This pushes American public opinion to support entering the war.
It is an important event in WW1 because it caused Americans to support it.
https://www.shmoop.com/historical-texts/zimmermann-telegram/ -
US declares war
United States declared war on Germany because of the submarines and the Zimmerman telegram.
It is an important event in WW1 because the United States joined the war and fought Germany.
https://www.army.mil/article/7916/us_declares_war_on_germany -
The Draft
The Selective Service Act authorized the draft.
It is an important event in WW1 because it started the draft. -
Battle of Cantigny
It was the first major American offensive war.
It is an important event in WW1 because America was on offense during the war. -
Battle of St. Mihiel
American troops fling themselves into the German lines.
It is an important event in WW1 because it is one of the last battles. -
WW1 ends
The war is over.
It is an important event in WW1 because the war is over.
https://www.history.com/this-day-in-history/world-war-i-ends
