Final answer:
The introduction of European diseases such as smallpox and measles to the American Indian populations in Georgia resulted in a catastrophic decline in their numbers due to a lack of immunity, with up to 90% of Native Americans dying from these diseases, significantly altering the demographic landscape of the Americas.
Step-by-step explanation:
One result of the introduction of European diseases to American Indian populations in Georgia was a drastic reduction in the indigenous population due to a lack of immunity. Epidemics of diseases such as smallpox, measles, and diphtheria ravaged Native American communities, who had no previous exposure or resistance to these foreign illnesses. In some areas, up to 90% of Native Americans perished from these infectious diseases, marking one of history's most abrupt and severe population disasters. The severity of the situation was exacerbated by factors such as malnutrition and weakened immune systems due to changes in their environment, further undermining their ability to survive these diseases.
The introduction of European diseases was responsible for the greatest number of Amerindian deaths in the late fifteenth and early sixteenth centuries. The diseases spread swiftly and virulently, impacting much of the indigenous population in the Americas, akin to the devastation wrought by the Black Death upon Europe. It is estimated that as much as 80 percent of the Native American population might have perished as a result, significantly altering the demographic landscape of the New World and facilitating European conquest.