The Qin Dynasty protected against invasion by "<span>d. building a great wall along the border" although it should be noted that strong additions to the military were made as well. </span>
Answer:
Americans entered the war in 1917 by declaring war on Germany. This was due to the attack on Lusitania, the unrestricted submarine warfare on American ships heading to Britain, and Germany encouraging Mexico to attack the USA. A British passenger ship that was sunk by a German U-Boat on May 7, 1915. 128 Americans died.
Explanation:
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Explanation:
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The radar<span> allowed </span>Britain<span> to track incoming German warplanes and gave Fighter </span>
Answer:
1 - Interchangeable Parts and Milling
2 - Photocopier and Parallel Motion
3 - steamboat
4 - morse code
5 - tom thumb locomotive
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