Jonas Salk<span> </span><span>was an American </span>medical researcher<span> and </span>virologist<span>. He discovered and developed one of the first successful </span>polio vaccines in the 1950's.
Hope I helped. :)
<span>Orgo wanted to buy this because it was a very attractive offer and a novel and easy acquisition. It seemed simple enough to do it and he chose to buy it, for the supply and maintenance of the garden he obtained at a just an opportune moment in which I do not hesitate to do so.</span>
it is called sovereign state
Answer:
Huh? I DON'T KNOW WHAT YOU'RE SAYING.
Cyclic movement involves short trips in which the person moving comes back home eventually, while migration is long term.
