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Answer:
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<em>The level of water decreases </em>
The War Industries Board was a United States government agency established on July 28, 1917, during World War 1, to coordinate the purchase of war supplies between the War Department and the Navy Department.
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<span>the reason Why was America’s victory at Yorktown among the most significant battles of the American Revolution is: General cornwallis surrendered and they captured of both him and his army
this became a very important victory because it created a blockade for British Army to circulate in the battlefield and dealt a massive blow for their forces</span>
