Answer:In 1947, Salk took a position at University of Pittsburgh, where he began conducting research on polio, also known as infantile paralysis. By 1951, Salk had determined that there were three distinct types of polio viruses and was able to develop a "killed virus" vaccine for the disease.
Explanation:
When English settlers came to Jamestown, the living conditions were very poor. By the time 1609 had come around, they had faced a harsh winter called "the starving time".
Because the winter was so harsh, people were getting sick and dying off at a very fast rate. Only about 1/3 of the settlers survived that winter, and it was rumored that the starving time was so bad that the settlers turned to eating some of the animals, such as the dogs to stay alive.
Because the people were eventually reinforced with supplies and more settlers, the colony of Jamestown was able to persevere and keep going considering they lost a significant amount of their original settlers. The tobacco crop and more settlers coming on ships in the next few years is what was able to keep Jamestown thriving.
This helped make it the first permanent settlement in North America, unlike the Lost Colony of Roanoke, Virginia, where all the settlers had vanished in the late 1500s.
Referring to the law of suspect
I believe the answer is: <span>It is for the freedom of the people and to protect them for the enemies. Also, this change is only for the better and we need this in our lives.
The law of suspect gave the government the power to capture and examine the people who are challenging their view.
Even though they say to the people that the purpose of the law was to protect the citizens, the european governments use this law to prosecute the protesters that deemed as problematic for the governments.</span><span />
Answer: to protect citizens right
Explanation: i would pick that because it better then the others. Hope this helps
The answer is <em>October Manifesto</em>, also officially known as "The Manifesto on the Improvement of the State Order". This was the answer of Tsar Nicholas II to the Russian Revolution of 1905, who basically resisted doing so, but he put it under pressure. This manifesto provides basic human rights and a parliament called the Duma as the supreme legislature, without whose approval it was not possible to pass laws. It seems that this manifesto was the trick of Tsar Nicholas, because shortly after its entry into force, Autocracy began again to show its strength.
