This site may help you:
https://quizlet.com/58430275/71-the-us-enters-wwi-flash-cards/
to save you from googling i believe the answer to your question is:
In<span> 1917 the </span>use of unrestricted German submarine warfare<span> caused the U.S. </span>to<span>enter the </span>war<span> on the side of the Allies. </span>How did Germany's use of unrestricted submarines warfare bring<span> the </span>United States into<span> WWI ? A </span>German U-boat<span> had sunk the British passenger ship the Lusitania </span>at<span> great loss of life.
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just know that if you are homeschooled like i am, quizlet iqll most likely have the answers to your questions, hope i helped you :)
Answer:
The answer would be Brazil.
Explanation:
Brazil borders 10 other countries.
