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Sinking of the Lusitania and the Zimmerman telegram
According to most historians there were two events that contributed to the US decision to enter WWI: the sinking of the Lusitania passenger liner (May 1915) and the Zimmerman telegram.You can explore primary sources related to both events below.
This warning was ignored and the Lusitania set sail anyway. You can read more about her journey here. Lost Liners: Lusitania . Ultimately, this journey ended in tragedy.
The Zimmerman telegram is probably the most famous incident of code breaking. Here is the coded message: Original Zimmerman telegram and the Decoded Zimmerman telegram
In January of 1917, British cryptographers deciphered a telegram from German Foreign Minister Arthur Zimmermann to the German Minister to Mexico, von Eckhardt, offering United States territory to Mexico in return for joining the German cause. In an effort to protect their intelligence from detection and to capitalize on growing anti-German sentiment in the United States, the British waited until February 24 to present the telegram to Woodrow Wilson. The American press published news of the telegram on March 1. On April 6, 1917, the United States Congress formally declared war on Germany and its allies.
According to most historians there were two events that contributed to the US decision to enter WWI: the sinking of the Lusitania passenger liner (May 1915) and the Zimmerman telegram.You can explore primary sources related to both events below.
This warning was ignored and the Lusitania set sail anyway. You can read more about her journey here. Lost Liners: Lusitania . Ultimately, this journey ended in tragedy.
The Zimmerman telegram is probably the most famous incident of code breaking. Here is the coded message: Original Zimmerman telegram and the Decoded Zimmerman telegram
In January of 1917, British cryptographers deciphered a telegram from German Foreign Minister Arthur Zimmermann to the German Minister to Mexico, von Eckhardt, offering United States territory to Mexico in return for joining the German cause. In an effort to protect their intelligence from detection and to capitalize on growing anti-German sentiment in the United States, the British waited until February 24 to present the telegram to Woodrow Wilson. The American press published news of the telegram on March 1. On April 6, 1917, the United States Congress formally declared war on Germany and its allies.