imichaelc1oy5t8i
29.01.2020 •
History
January 1865 during the presidency of blank congress approved the blank amendment which outlawed slavery in the entire united states
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Ответ:
@Mousey1696
United states slavery
Explanation:
Ответ:
The correct answer is C) Surgeons began replacing worn-out heart valves with artificial ones.
The medical advancement that occurred during the 1950s is "Surgeons began replacing worn-out heart valves with artificial ones."
During the 1950s, medical researchers discovered new methods to help people with heart diseases. Some great examples are the pacemaker, better techniques for open-heart surgery, and the invention of the artificial heart. These technological advancements represented the opportunity for patients to live a longer life or a quality life.