Which of the following explains the impact of the creation of the smallpox vaccine on the Americas?(1 point) Responses It led to the complete eradication of the disease. It led to the complete eradication of the disease. It prevented milkmaids on the two continents from getting the disease. It prevented milkmaids on the two continents from getting the disease. It led to the deaths of about 90 percent of Indigenous Americans. It led to the deaths of about 90 percent of Indigenous Americans. It led to the development of ways to prevent the disease like mosquito nets.

The option that explains the impact of the creation of the smallpox vaccine on the Americas is: It led to the deaths of about 90 percent of Indigenous Americans.

Why was the Magna Carta most important to the development of constitutional monarchy?(1 point) Responses It created a council of nobles to prevent the monarch from violating rights. It created a council of nobles to prevent the monarch from violating rights. It established the legal principle that the monarch was not above the law. It established the legal principle that the monarch was not above the law. It ended a rebellion against King John I. It ended a rebellion against King John I. It established that all Englishmen had legal right

The option that explains why the Magna Carta was most important to the development of constitutional monarchy is: It established the legal principle that the monarch was not above the law.

Based on the given options, the correct explanation for the impact of the creation of the smallpox vaccine on the Americas is:

"It prevented milkmaids on the two continents from getting the disease."

To arrive at this answer, we can eliminate options one, three, and four because they are duplicates of each other. Option two, "It led to the complete eradication of the disease," is not the correct explanation, as smallpox has not been completely eradicated globally, although it has been eradicated from the Americas. Option five, "It led to the deaths of about 90 percent of Indigenous Americans," is not correct either, as the creation of the smallpox vaccine did not lead to deaths but rather helped prevent the disease.

Therefore, based on the remaining options, the correct explanation is that the smallpox vaccine prevented milkmaids on two continents (presumably the Americas) from getting the disease.