Answer:In 1947, Salk took a position at University of Pittsburgh, where he began conducting research on polio, also known as infantile paralysis. By 1951, Salk had determined that there were three distinct types of polio viruses and was able to develop a "killed virus" vaccine for the disease.
Explanation:
<span>African Americans were not protected under the law.</span>
Metternich urged conservative rulers to act decisively and crush the dangerous uprisings. In response, a French army marched over the Pyrenees to suppress a revolt in Spain. Austrian forces crossed the Alps to smash rebellious outbreaks in Italy.
Answer:
He would view it as bloodsome, grewsome and even scary!
Explanation:
