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The space suit
Though the first man stepped on the moon in 1969, in the 1930s astronomers and physicists were already planning for the voyage to outer space. Emilio Herrera Linares, a Spanish military colonel, is credited with being the first to design a pressurised suit which was used in a high-altitude balloon flight in 1936.
The modern mop
While the mop isn’t the most glamorous of inventions, it certainly is one of the most useful. People had been using rags to wash floors since the 15th century but it was in the 1960s that the engineer Manuel Jalón Corominas had the idea to create a purpose-built mop with a bucket to ring the water out in.
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that's just a few ^_^!!!
Answer:
The answer is D. reincarnation and enlightenment.
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The American frontier includes the geography, history, folklore, and cultural expression of life in the forward wave of American expansion that began with English colonial settlements in the early 17th century and ended with the admission of the last remaining western territories as states in 1959.
Explanation:
This era of massive migration and settlement was particularly encouraged by President Thomas Jefferson following the Louisiana Purchase, giving rise to the expansionist philosophy known as "Manifest Destiny".
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