I believe it was the use of poisonous gasses, which they not only used on the Jews but in war too......., or The newly created Machine gun<span />
<span>Based on what I know about the Cold War and the quote you gave above I would choose this option: It showed that democratic nations were facing a threat from Soviet expansionism.
Churchill had no plans to attack the Soviets or liberate these states. It was merely about pointing out the spreading of communism and that the western nations should join forces to contain it.</span>
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Explanation:
She expanded Russia and procured a Black Sea port.
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I believe the answer is number 1 'The Founding Fathers realized establishing a federal government would help protect America.'
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