7- WWI (1914-1918) U-boat warfare (1914-1918) Zimmerman telegram (1917) (jan 1, 1914 – jan 1, 1914)

Description:

Zimmerman telegram: A telegram Germany sent to Mexico to try and convince Mexico to attack the U.S (possibly in return for their stolen land from the Mexican cessession. Land in the Soutwest U.S). The telegram was intercepted by the British and given to the American Government.

U-boat warfare +Lusitana: "Britain's blockade across the North Sea and the English Channel cut the flow of war supplies, food, and fuel to Germany during World War I. Germany retaliated by using its submarines to destroy neutral ships that were supplying the Allies. The formidable U-boats (unterseeboots) prowled the Atlantic armed with torpedoes. They were Germany’s only weapon of advantage as Britain effectively blocked German ports to supplies. The goal was to starve Britain before the British blockade defeated Germany.
On May 7, 1915, German submarine U-20 torpedoed the Lusitania, a Cunard passenger liner, off the coast of Ireland. Nearly 1,200 men, women, and children, including 128 Americans, lost their lives. The Allies and Americans considered the sinking an act of indiscriminate warfare. "

https://www.theworldwar.org/learn/about-wwi/unrestricted-u-boat-warfare

BOTH WERE SOME OF THE CAUSES THAT LED TO WWI--> "World War I, also known as the Great War, began in 1914 after the assassination of Archduke Franz Ferdinand of Austria."
https://www.history.com/topics/world-war-i/world-war-i-history

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