55555555555555555555555555555555555555555555555555555555555<span />
The answer to this question can be quite subjective. Some people will say that the telephone is the most important invention, or the automobile, or the plane, but for me personally, I'd choose antibiotics.
It is a modern-day invention (as opposed to the Middle Ages, for example) which changed our lives for the better. Before penicillin was discovered in the 1920s by Alexander Fleming, people were constantly dying because of most harmless diseases. But after antibiotics were invented, people were given a chance to recover from their illnesses much more easily.
Answer:
the were to over flowed so the built stronger ones just incase of big floods
Explanation:
took the test
Answer:Railroad companies could never agree to use the same gauge - the space between the rails. After the revolution in transportation, almost all the ordinary items people needed had to be made locally.
Explanation:
mark me brainly please
