Which of the following explains the impact of the creation of

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

It led to the complete eradication of the disease.

The impact of the creation of the smallpox vaccine on the Americas is that it led to the complete eradication of the disease.

To determine which of the given options explains the impact of the creation of the smallpox vaccine on the Americas, we need to evaluate each option and its connection to the smallpox vaccine.

Option 1: "It led to the development of ways to prevent the disease like mosquito nets."
This option does not directly relate to the smallpox vaccine. Instead, it refers to preventative measures like mosquito nets, which are not specifically connected to the smallpox vaccine. Therefore, this option is not the correct explanation.

Option 2: "It led to the complete eradication of the disease."
While the smallpox vaccine played a crucial role in the global eradication of smallpox, it is important to note that this option specifically mentions "the Americas." Smallpox was eradicated worldwide, but this option focuses on the impact within the Americas. Though the vaccine significantly contributed to decreasing and controlling smallpox cases, it did not lead to the complete eradication of the disease in the Americas. Therefore, this option is not the correct explanation.

Option 3: "It led to the deaths of about 90 percent of Indigenous Americans."
This option is historically inaccurate and does not relate to the impact of the smallpox vaccine on the Americas. Smallpox did ravage Indigenous populations during European colonization, but the vaccine's creation did not directly lead to these deaths. It was the introduction of smallpox itself that caused devastation, not the vaccine. Therefore, this option is not the correct explanation.

Option 4: "It prevented milkmaids on the two continents from getting the disease."
This option is also unrelated to the smallpox vaccine's impact on the Americas. It refers to the prevention of smallpox among milkmaids, but it does not address the overall impact of the vaccine on the Americas. Therefore, this option is not the correct explanation.

Based on the evaluation of each option, none of them provide an accurate explanation of the impact of the creation of the smallpox vaccine on the Americas.