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Answer:
Advances in transportation and communication changed the way that people lived. People could travel faster and farther by steamship, railroad, car, and airplanes. They could also communicate nationally and internationally by telegraph, telephone, and radio.
Explanation:
Answer: Because it has lasted for a while
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.