The united states entered the war because Germany was using submarines to sink our trading ships, they also sunk a passenger ship called the Lustitania, which killed many civilians. Another reason they entered war was because Germany sent the Zimmerman telegram that they sent to Mexico to try to have them enter the war against us. The telegram said that if they helped Germany, Germany would help them get land back that they lost during the <span>Mexican–American War</span>.
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Answer:
Federalism is a system of government in which the same territory is controlled by two levels of government. ... Both the national government and the smaller political subdivisions have the power to make laws and both have a certain level of autonomy from each other.
Explanation:
Austria used it as a flimsy excuse to start a war with Serbia, which it had been wanting to do anyway.
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