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:
Answer:
athough Madison fared poorly during the war, the victories against Tecumseh and at New Orleans lifted American spirits and returned Madison to a high point of public respect. If nothing else, the war swelled national pride, broke the Indian threat in the Northwest, and reaped tremendous political benefits for those lucky enough to have fought and survived. The Battle of the Thames River alone, for example, was used to produce a President of the United States (Harrison), a vice president, three governors of Kentuc…
Explanation:
if u want the rest, give me brainlist
Concurrent powers are powers that are shared by both the State and the federal government. These powers can be exercised simultaneously within the same territory and in relation to the same body of citizens. These concurrent powers including regulating elections, taxing, borrowing money and establishing courts.
