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Imperialism, nationalism, militarism, alliances, and the assassination of the prince of Austria-Hungary are all causes that lead to WWI.
Why did this Great War start?
The Germans sank the Lusitania. More than 1,000 people died. 128 Americans died.
Tell America that we are sorry for sinking the Lusitania.
From GermanyIf you join our side in the war, we will help you get back territory from the US. To Mexico
This letter is threatening the US! The letter is called the Zimmerman Telegram. It’s good that it was intercepted by the Great Britain. When U.S.A should join the war.
Germany attacked 4 American ships and broke their promise! We HAVE to declare war on Germany!
We declare war on Germany!