The us sent troops to south korea
Answer:
Though the first actual helicopter wasn’t built until the 1940s, it is believed that Leonardo da Vinci’s sketches from the late fifteenth century were the predecessor to the modern day flying machine. As with many of da Vinci’s ideas, he never actually built and tested it – but his notes and drawings mapped out exactly how the device would operate.
Explanation:
Eugene Debs was the man who once ran for the presidency of the United states while being in prison. The correct option among all the options given in the question is the third option. He was also an American Union leader and the founder of the Industrial workers of the world. He ran for the presidency of the United States 5 times.
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