Answer:
Most likely, our most important water source is ground water. Other important sources include lakes, rivers, and other freshwater sources.
B, European settlers were immune to such diseases like smallpox because it came from their region, when knowledge that the native Americans were not immune and the disease was lethal to them, they started distributing blankets and clothing items that were infected with the viruses and caused a major impact on native population
Their were an abundance of them dying from “the fever” and getting sick from poor treatment