Scientists label Mount Vesuvius as the MOST dangerous volcano.
The United States feared that if communism was successful on Vietnam, the rest of the countries that border it would soon turn into communism and those other countries that border that new communist country would also be converted to communism and so on. This is called the "domino theory" and made the United States to send troops to prevent the theory from happening.
<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>
Leonardo da Vinci, Galileo Galilei, Nicolaus Copernicus, Tycho Brahe hope this works!!