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Answer1. Unrestricted submarine warfare

2. Zimmerman telegram to mexico

3. U.S. financial ties to the Allies

4. Propaganda against Germany (mainly sources from britian)

(tensions that brought U.S. into war)

what brought up ww1, was the naval competition in the balkins with British and German battleships, dreadnoughts. U boats attacking merchant transport ships.

the assassination of the soon to be king of Austria by Serbia anarchists

Germans sends Russia and ultimatum

Also there was the Morocco crisis; a tension between Germany and France. Both of the countries wanted to take over Morocco.

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โˆ™ 2011-02-16 04:22:45
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Q: What were the 4 sources of tension that led to World War 1?
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