An effect of the decline in trade after the fall of roman empire is : There was a shift to a rural society
after the fall of roman empire, more and more people have ownerships over their land and buildings ( previously it all belong to the empire)
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Answer:
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Answer:
His creation of the telephone was important. People had faster communication and it made factory work easier.
The United States produced the most.
Answer:
Vaccines
Explanation:
It is not known if it was a Chinese or Indian discovery but it was not popularized before the use in 1796. In 1796 Edward Jenner inoculated a boy in England and that prevented him from getting smallpox. This was later used as the groundwork for developing vaccines and today's vaccine culture and mass immunization would not be possible without Jenner and his experiments.
