The person who developed the Polio vaccine is the American Jonas Salk
, He developed the vaccine against the Polio and it was first tested in 1952. (there was a bad outbreak of Polio in the US that year).
The Avignon Papacy was a period of time when there was a Pope in France instead of in Rome. The chosen pope was French and since there was strife between Rome and France, he decided to stay in Avignon and be a pope from there. After a few popes, they decided to go back to Rome but there were also people who wanted to be in Avignon, so the religion had an official pope in Rome, and an illegal one in Avignon. It was important because it showed that even kings can't interfere into religious affairs and that the Pope has the final word, or at least had at that time.
John Kennedy planned to attend Yale law school, but when world war 2 came he didnt go. no, hope this helped :)
A) They poisoned victims with gas from the van's exhaust. Hope this helps and please mark brainliest.
Answer:
the people? i'm not super sure , more details?
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