The first polio vaccine was the inactivated polio vaccine, developed by Jonas Salk. The oral polio vaccine was developed by Albert Sabin.
Answer:
Could we please have more information, I'm not quite sure what the question is.
Explanation:
Answer:
If a country is a part of NATO and is attacked/invaded then the other members must come to their defense.
Explanation:
As I'm sure you're aware, Russia is invading Ukraine with the purpose of obtaining resources.The Ukraine is currently not a part of NATO. However, one of the agreements within NATO is that if a country in the organization is directly attacked or invaded (in the case of the Ukraine currently) other NATO countries must step in and provide defenses. While the US and other NATO countries are currently providing aid to the Ukraine and accepting refugees, they aren't defending them to the extent that they would be if the Ukraine was in NATO, which is why Putin doesn't want them to join.
The early America was formed in the early 1600 century, this was then developed and emerged as the World super power known to date as the United States of America.
<h3 /><h3>What is Early America? </h3>
Early America is the time when the America was initially formed this was formed in the year 1607 at Ja-me-st-o-wn, Vir-gi-n-ia when the first tribe migrated from the religious influences.
This tribe was then joined by more tribes in the area of Ma-ss-ac-hu-se-tts, these tribes joined in the year 1620, the tribes kept increasing in number and the all started settling in the nearby areas.
The early America period is considered to end in the late 1700 century that is to be exact in the 1776.
The early America covers the area of Vir-gi-n-ia, Ca-li-for-ni-a, Te-x-as, Ar-kan-sa-s and N-e-w Y-or-k and N-e-vi-s.
Learn more about Early America at brainly.com/question/28321376
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