Answer: The Invention of the timer gear on fighter aircraft, the monoplane and more advanced aircraft such as fighter and bombers. the tank, the submarine, the machine gun, the dreadnought, the semi-auto rifle, chemical weapons, and the sub-machine gun. The tank, the submarine, the machine gun, semi-auto rifle, and the sub-machine gun are all still used today.
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Answer:
hear your answer is option D
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the the ban of longing and clear cutting on Federal forest lands.
Answer:
is it turkeys? I know the americans had corn and wheat, so that's the only other thing that comes to mind
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